Technical field

The present invention relates to the aesthetic field. More specifically, this disclosure relates to the design of eyebrows.

Technological context

The background of the present invention is hereinafter introduced with the discussion of techniques relating to its context. However, even when this discussion refers to documents, acts, artifacts and the like, it does not suggest or represent that the discussed techniques are part of the prior art or are common general knowledge in the field relevant to the present invention.

Eyebrows (i.e., the two skin ridges covered with small, bristly hairs following the orbital arc) have a major impact on the aesthetic appearance of each person. Indeed, the eyebrows, due to their prominent position between the eyes and the forehead, are very important in the harmony of the face of the person. However, the eyebrows generally have natural imperfections (for example, in shape and color). Furthermore, the eyebrows may be damaged, for example, by thinning out down to disappear completely; this may be due to bad hair removal, old age, specific diseases (such as alopecia), side effects of particularly heavy treatments (such as chemotherapies) and so on.

Various techniques are available to draw the eyebrows; this allows restoring the original appearance of the eyebrows (in case of damage thereof) and/or improving their appearance (in terms of both shape and thickening). In general, these (eyebrow drawing) techniques are based on a drawing tool which is capable of coloring the skin of the person. The drawing tool may be a simple make-up pencil, a dermo-pigmentation pen (such as in micro-blading technology) or a tattoo machine (such as based on needles); the make-up pencil deposits a colored mixture onto the skin (with a temporary effect, such as for a few hours), the dermo-pigmentation pen introduces colored pigments into the epidermis (with a semi-permanent effect, such as for a few months) and the tattoo machine introduces the colored pigments into the dermis (with a permanent effect).

In any case, the drawing of the eyebrows is preceded by a design phase of their desired shape on the face of the person. This is necessary both when it is wanted simply to follow the natural shape of the eyebrows and when it is wanted to give the eyebrows shapes being particularly pleasant from an aesthetic point of view (for example, gull-wing like or soft-angle like to create a glamour effect or rounded to create a sweet effect).

For this purpose, it is necessary to mark some reference points onto the face to be followed with the drawing tool. For example, in the 3 -point technique for each eyebrow a vertical stroke is drawn from the outer edge of the corresponding naris (from which the eyebrow will start). Then, a stroke is drawn aligned with the naris and the corresponding pupil (which defines the highest point of the eyebrow). Finally, a stroke is drawn aligned with the naris and the outer edge of the corresponding eye (where the eyebrow will end). For this purpose, the operator may exploits a (rigid or flexible) ruler.

In any case, the design of the eyebrows is a rather complex operation. Indeed, it is difficult to define the reference points correctly, especially in the same way for the two eyebrows. V

As a consequence, it is possible to have corresponding errors in the drawing of the eyebrows, and particularly more or less large differences between the two eyebrows. This exposes to the risk of anti-aesthetic defects, which are particularly serious in case of semipermanent effect of the eyebrows and totally unacceptable in case of permanent effect of the eyebrows.

The operator may also try to correct the errors manually (if and as far as possible). However, this involves a higher expenditure of time and generally a not optimal aesthetic effect.

In any case, the design of the eyebrows is a very long process; moreover, the obtained results heavily depend on the skills and on the experience of the operator.

All of the above has a negative impact on the quality and on the cost of the eyebrow drawing.

Summary

A simplified summary of the present invention is herein presented in order to provide a basic understanding thereof; however, the sole purpose of this summary is to introduce some concepts of the invention in a simplified form as a prelude to its following more detailed description, and it is not to be interpreted as an identification of its key elements nor as a delineation of its scope. In general terms, the present invention is based on the idea of providing a measuring tool which may be worn for designing the eyebrows.

Particularly, an aspect provides a measuring device for designing eyebrows on a face of a person. The measuring device comprises a supporting component adapted to be worn on a head of the person and two sliding components which are mounted on the supporting component so as to be slidable along corresponding guides of the supporting component. The supporting component is graduated for measuring corresponding positions of each of the sliding components and/or each of the sliding components is graduated for measuring corresponding positions on the face.

A further aspect provides a corresponding method for designing eyebrows.

More specifically, one or more aspects of the present invention are set out in the independent claims and advantageous features thereof are set out in the dependent claims, with the wording of all the claims that is herein incorporated verbatim by reference (with any advantageous feature provided with reference to any specific aspect that applies mutatis mutandis to every other aspect).

Brief description of the figures

The solution of the present invention, as well as further features and the advantages thereof, will be best understood with reference to the following detailed description thereof, given purely by way of a non-restrictive indication, to be read in conjunction with the accompanying drawings (wherein, for the sake of simplicity, corresponding elements are denoted with equal or similar references and their explanation is not repeated, and the name of each entity is generally used to denote both its type and its attributes, like value, content and representation). In this respect, it is expressly intended that the drawings are not necessary drawn to scale (with some details that may be exaggerated and/or simplified) and that, unless otherwise indicated, they are merely used to illustrate the structures and procedures described herein conceptually. Particularly:

FIG.l shows an illustrative representation of an embodiment of the present invention,

FIG.2 shows a schematic representation of a measuring device according to an embodiment of the present invention,

FIG.3A-FIG.3C show different examples of use of the measuring device according to an embodiment of the present invention,

FIG.4 shows a schematic representation of an exploded particular of the measuring device according to an embodiment of the present invention, and

FIG.5 shows another example of use of the measuring device according to an embodiment of the present invention.

Detailed description

With reference in particular to FIG.l, an illustrative representation is shown of an embodiment of the present invention.

Particularly, a measuring device 100 is used to design eyebrows on a face of a person. For this purpose, the measuring device 100 comprises the following components.

A supporting component, or simply support 105 (for example, spectacle frame like) is adapted to be worn on ahead of the person (in a condition of use). The support 105 has a resting element 110, which rests on a nose of the person (in the condition of use). The support 105 is provided with two guides 115a and 115b; the guides 115a, 115b are symmetrical with respect to the resting element 110, so as to be arranged on opposite sides of the nose, to the left and to the right, respectively (in the condition of use). Two sliding components, for example, rulers 120a and 120b are mounted on the support 105; the rulers 120a and 120b are slidable along the guides 115a and 115b, respectively. The support 105 is graduated along the guides 115a, 115b for measuring corresponding positions of the rulers 120a, 120b with respect to the support 105; for this purpose, a graduated scale (or more) 125a and 125b, for example, in cm and mm, is drawn along the guide 1 15a and 115b, respectively, on a front face of the support 105 which is pointed away from the face (in the condition of use). In addition or in alternative, the rulers 120a, 120b are graduated for measuring corresponding positions on the face; for this purpose, a graduated scale (or more) 130a and 130b, for example, again in cm and mm, is drawn along the ruler 120a and 120b, respectively, on a front face which is pointed away from the face (in the condition of use). For example, each ruler 120a, 120b has a length of 5-15 cm and is provided with two graduated scales at its longitudinal edges; a graduated scale extends from a longitudinal end thereof whereas a different graduated scale extends on both sides from a central position thereof.

In order to design the eyebrows on the face of the person, the support 105 is worn on her/his head. In this way, the support 105 remains firmly in place, so as to operate as a (fixed) body of a caliber to make the necessary measurements for establishing the desired shape of the eyebrows. The rulers 120a and 120b may instead move along the guides 115a and 115b, respectively, so as to act as slides of the caliber to mark the reference points onto the face to be followed for drawing the eyebrows (for example, in the 3 -point technique).

The measuring device 100 greatly simplifies the design of the eyebrows. Particularly, the rulers 120a, 120b may be positioned precisely (thanks to the graduated scales 125a, 125b along the guides 115a, 115b) with respect to the face (thanks to the support 105 in stable position with respect thereto) for performing very accurate measurements (thanks to the graduated scales 130a, 130b). This makes it easy to define the reference points correctly, especially in the same way for the two eyebrows.

As a result, the risks of errors in the design of the eyebrows are eliminated (or at least greatly reduced); this is particularly advantageous in the case of semi-permanent effect and especially in the case of permanent effect of the eyebrows. At the same time, the need of manually correcting the errors is substantially reduced; this involves a lower expenditure of time and a better esthetic effect.

In any case, the proposed solution allows designing the eyebrows very quickly; moreover, this allows obtaining highly reproducible results (since they are less dependent on the skills and the experience of corresponding operators).

All of the above has a positive effect on the quality and the cost of the design of the eyebrows.

With reference now to FIG.2, a schematic representation is shown of the measuring device 100 according to an embodiment of the present invention.

In this case, the support 105 is shaped like a spectacle frame (denoted with the same reference). For example, the (spectacle) frame 105 is made of hypoallergenic material of synthetic type (such as celluloid, cellulose acetate, polyamide, polymethyl methacrylate, Megol and so on) and/or of metallic type (such as aluminum, titanium and so on). This makes the measuring device 100 very practical and easy to produce at low cost.

A fore part of the 105 frame comprises a front formed by two rims 205a and 205b (with no lens inside them) joined by a 210 bridge.

Starting from the rims 205a and 205b, for example, they have a square shape, each with a size of 5-10 cm x 10-15 cm, a width of 0.5-2.0 cm and a thickness of 0.1 -1.0 cm. The rims 205a and 205b accommodate the guides 115a and 115b, respectively. Particularly, the guides 115a, 115b extend along the whole rims 205a,205b so that they have a closed ring shape as well, with an upper section and a lower section substantially horizontal and an inner section and an outer section transverse to the horizontal direction, for example, substantially vertical (in the condition of use). This allows a wide freedom of movement of the rulers 120a, 120b and it makes the proposed solution very versatile. Two locking elements 215a and 215b (for example, screws) are associated with the rulers 120a and 120b, respectively. Each locking element 215a,215b is adjustable between a passive condition (wherein it allows the corresponding ruler 120a, 120b to move relative to the frame 105, both in translation and in rotation) and an active condition (wherein it prevents the corresponding ruler 120a, 120b to move relative to the support 105). This further improves the accuracy of the obtained results.

Passing to the bridge 210, for example, it has a generally rectangular shape, with a height of 2-5 cm and a idth of 1-2 cm. The bridge 210 is provided with a central opening, for example, a slot 220 which extends vertically (in the condition of use); the slot 220 is used to mark a reference point, or zero point, onto the face. Two nose pads (or flaps) 225a and 225b extend inwards the frame 105 from the rims 205a and 205b, respectively, to define the resting element on the nose of the person (not shown in the figure). Two temples 230a and 230b are hinged to outer ends of the rims 205a and 205b, respectively, for example, at lower outer edges thereof (in the condition of use). The temples 230a, 230b are movable between a closed position and an open position. In the closed position, the temples 230a, 230b (as shown for the temple 230a in the figure) are folded over the rims 205a, 205b (overlapping each other in part) to reduce the overall space occupied by the frame 105, for example, so as to allow putting it into a corresponding case (not shown in the figure). In the open position, the temples 230a,230b (as shown for the temple 230b in the figure) extend transversely (substantially perpendicularly) to the rims 205a, 205b to be worn onto the corresponding ears of the person (wrapping them partly in anatomical way with a free end thereof). An elastic lace or two substantially inextensible laces (not shown in the figure) may also be added between the free ends of the temples 230a, 230b to tighten the frame 105 onto the head of the person (in the condition of use) to further improve its stability. In addition, one or more spirit levels (not shown in the figure) may be added to determine corresponding tilts; for example, a spirit level may be provided on the bridge 210 to verify the horizontal arrangement of the frame 105 and/or a spirit level may be provided on each of the rulers 120a, 120b to verify their vertical/horizontal arrangement.

With reference now to FIG.3A-FIG.3C, different examples are shown of use of the measuring device 100 according to an embodiment of the present invention.

Starting from FIG.3A, an operator (for example, a beautician) puts the frame 105 onto the head of the person (possibly tightening it around her/his head by means of the corresponding laces). Once the frame 105 is correctly centered on the face of the person, the operator marks the zero point (for example, with a make-up pencil) onto the face through the slot 220; this allows verifying continuously that the frame 105 remains in the correct position (with the zero point aligned with the slot 220). At this point, the operator may mark other reference points for the eyebrow design (for example, still with the makeup pencil).

Particularly, in the 3 -point technique, the operator releases one of the rulers, for example, the ruler 120a by bringing its locking element 215a to the passive condition. The operator moves the ruler 120a along the guide 115a (for example, in its lower section) until arranging it vertically next to the corresponding (left) naris of the nose. The operator then locks the ruler 120a by bringing its locking element 215a to the active condition. At this point, the operator releases the other ruler 120b by bringing its locking element 215b to the passive condition. The operator moves the ruler 120b similarly along the guide 115b until arranging it vertically next to the corresponding (right) naris of the nose, in the same position along the graduated scale 130b at which the ruler 120a is positioned along the graduated scale 130a. The operator then locks the ruler 120b by bringing its locking element 215b to the active condition. These operations may be repeated one or more times on each of the rulers 120a, 120b to refine their position, until they are in the same desired position along the graduated scales 130a, 30b. At this point, the operator marks two points onto the face along the rulers 120a, 120b in correspondence to the eyebrows (to indicate their beginning).

Moving to FIG.3B, the operator releases one of the rulers, for example, the ruler 120a by bringing its locking element 215a to the passive condition. The operator moves the ruler 120a along the guide 115a (for example, still in its lower section) and rotates it until arranging it between the corresponding naris and the corresponding (left) pupil. The operator then locks the ruler 120a by bringing its locking element 215a to the active condition. At this point, the operator releases the other ruler 120b by bringing its locking element 215b to the passive condition. The operator moves the ruler 120b similarly along the guide 115b and rotates it until arranging it between the corresponding naris and the corresponding (right) pupil, in the same position along the graduated scale 130b at which the ruler 120a is positioned along the graduated scale 130a. The operator then locks the ruler 120b by bringing its locking element 215b to the active condition. These operations may be repeated one or more times on each of the rulers 120a, 120b to refine their position, until they are in the same desired position along the graduated scales 130a, 130b. At this point, the operator marks two points onto the face along the rulers 120a, 120b in correspondence to the eyebrows (to indicate their highest point).

Moving to FIG.3C, the operator releases one of the rulers, for example, the ruler 120a by bringing its locking element 215a to the passive condition. The operator moves the ruler 120a along the guide 115a (for example, in its lower/outer section) and rotates it until arranging it between -the corresponding naris and the outer edge of the corresponding (left) eye. The operator then locks the ruler 120a by bringing its locking element 215a to the active condition. At this point, the operator releases the other ruler 120b by bringing its locking element 215b to the passive condition. The operator moves the ruler 120b similarly along the guide 115b and rotates it until arranging it between the corresponding naris and the outer edge of the corresponding (right) eye, in the same position along the graduated scale 130b at which the ruler 120a is positioned along the graduated scale 130a. The operator then locks the ruler 120b by bringing its locking element 215b to the active condition. These operations may be repeated one or more times on each of the rulers 120a, 120b to refine their position, until they are in the same desired position along the graduated scales 130a, 130b. At this point, the operator marks two points onto the face along the rulers 120a, 120b in correspondence to the eyebrows (to indicate their end).

With reference now to FIG.4, a schematic representation is shown of an exploded particular of the measuring device 100 according to an embodiment of the present invention.

The figure refers to a generic half of the measuring device, with the same considerations which apply to the other half; therefore, for the sake of simplicity, the corresponding components will be indicated below by omitting their suffixes ("a" and "b").

The guide 115 is defined by a channel 405 (for example, with a square section). The channel 405 is opened (on the front face of the support 105) by a slot 410. The slot 410 is narrower than the channel 405, so as to define two (lateral) undercuts 415a and 415b. A runner 420 comprises a body matching the channel (for example, a small ball with a flat bottom to prevent it from tilting). In this way, the runner 420 may slide along the channel 405 remaining constrained inside it by the undercuts 415a, 415b. A side opening (not shown in the figure) may be provided in the channel 405 to insert/remove the runner 420 during production and possibly for replacement operations (with the side opening that may be closed, possibly in a reversible way such as with a sliding door). The runner 420 has a threaded hole 425 facing the slot 410 (extending perpendicularly thereto). A (longitudinal) slotted hole 430 with a width matching the one of the slot 410 is formed along the ruler 120. A screw 435 is screwed into the (threaded) hole 425. The screw 435 comprises a shank 440 and a head 445. The shank 440 has a width matching the one of the slotted hole 430 and of the slot 410, and it has a portion proximal to the head 445 which is smooth and an end portion (distal from the head 445) which is threaded; the head 445 (for example, having circular section with knurled lateral surface to facilitate its driving) has a width greater than the one of the slotted hole 430. The shank 440 crosses the slotted hole 430 protruding beyond the ruler 120 and then crosses the slot 410 reaching the hole 425 (for example, fitting onto washers or springs arranged between the head 445 and the ruler 120 and between the ruler 120 and the support 105). In this way, the shank 440 may slide along the slotted hole 430 which serves as (further) guide therefor; at the same time, the head 445 constraints the ruler 120 between it and the support 105.

The screw 435 defines the locking element of the ruler 120. Particularly, in the passive condition the screw 435 is loose (for example, by turning it counterclockwise) so that it does not act on the runner 420 and the ruler 120. As a result, the runner 420 is free to slide along the channel 405, thereby allowing the same movement to the ruler 120 which is coupled with the runner 420 by the lateral interference of the shank 440 with the slotted hole 430 (i.e., in parallel to the front face of the support 105). In addition, the ruler 120 is free to rotate (through the slotted hole 430) around the shank 440 (i.e., around a rotation axis perpendicular to the front face of the support 105). The shank 440 is also free to slide along the slotted hole 430, thereby allowing the ruler 120 to slide with respect to the shank 440 (in parallel to the front face of the support 105). Conversely, in the active condition the screw 435 is tightened (for example, by turning it clockwise) so that the head 445 compresses the ruler 120 against the front face of the support 105 (thanks to the traction exerted onto the runner 420 through the shank 440). As a result, the runner 420 (and then the ruler 120 as well) may not slide along the channel 405, the ruler 120 may not rotate around the shank 440 and the ruler 120 may not slide with respect to the shank 440.

Advantageously, it is possible to replace the ruler 120. For this purpose, for example, the screw 435 is removed by unscrewing it from the hole 425 (counterclockwise) and pulling it out of the slot 430, thereby allowing removing the rulerl20. At this point, a new ruler (not shown in the figure) is placed onto the support 105 and the screw 435 is inserted through its slot and it is screwed back into the hole 425 (clockwise).

With reference now to FIG.5, another example is shown of use of the measuring device 100 according to an embodiment of the present invention.

In this case, the two rulers mounted on the guides 115a, 115b have been replaced by a new ruler 520 as indicated above (for example, by mounting it onto the guide 115a in the figure). The (new) ruler 520 has a structure similar to the one of the (previous) rulers that have been replaced, with a graduated scale (or more) 530 that is drawn along it. However, the ruler 520 has a length which is higher than the one of the previous rulers (for example, equal to 1.5-3 times, such as 15-25 cm). This allows performing further measurements (for example, horizontally, such with respect to the ears of the person).

Modifications

Naturally, in order to satisfy local and specific requirements, a person skilled in the art may apply many logical and/or physical modifications and alterations to the present invention. More specifically, although this invention has been described with a certain degree of particularity with reference to one or more embodiments thereof, it should be understood that various omissions, substitutions and changes in the form and details as well as other embodiments are possible. Particularly, different embodiments of the present disclosure may even be practiced without the specific details (such as the numerical values) set forth in the preceding description to provide a more thorough understanding thereof; conversely, well-known features may have been omitted or simplified in order not to obscure the description with unnecessary particulars. Moreover, it is expressly intended that specific elements and/or method steps described in connection with any embodiment of the present disclosure may be incorporated in any other embodiment as a matter of general design choice. Moreover, items presented in a same group and different embodiments, examples or alternatives are not to be construed as de facto equivalent to each other (but they are separate and autonomous entities). In any case, each numerical value should be read as modified according to applicable tolerances; particularly, the terms “substantially”,“about”,“approximately” and the like should be understood as“within 10%”. Moreover, each range of numerical values should be intended as expressly specifying any possible number along the continuum within the range (comprising its end points). Ordinal or other qualifiers are merely used as labels to distinguish elements with the same name but do not by themselves connote any priority, precedence or order. The terms include, comprise, have, contain, involve and the like should be intended with an open, non-exhaustive meaning (i.e., not limited to the recited items), the terms based on, dependent on, according to, function of and the like should be intended as a non-exclusive relationship (i. e. , with possible further variables involved), the term a/an should be intended as one or more items (unless expressly indicated otherwise), and the term means for (or any means-plus-function formulation) should be intended as any structure adapted or configured for carrying out the relevant function.

For example, an embodiment provides a measuring device for designing eyebrows on a face of a person. However, the measuring device may be used to make any type of measurements (for example, to mark any number of points of any kind), in order to design any type of eyebrows (for example, gull-wing, soft angle, rounded, straight and so on) to be drawn in any way (for example, with temporary, semi-permanent, permanent effect and so on); moreover, the eyebrows may be designed onto the face of any person (for example, woman, man, child and so on) for any purpose (for example, adjustment, restoring, improvement and so on).

In an embodiment, the measuring device comprises a supporting component which is adapted to be worn on a head of the person in a condition of use. However, the supporting component may be of any type (for example, spectacle frame like, crown like and so on), of any size (for example, with different sizes, fixed or adjustable, and so on) and of any material (for example, synthetic material, metallic material, their combination and so on).

In an embodiment, the supporting component has a resting element for resting on a nose of the person in the condition of use. However, the resting element may be of any type (for example, two nose pads, a recess and so on).

In an embodiment, the support component has two guides which are symmetrical to the resting element so as to be arranged on opposite sides of the nose in the condition of use. However, the guides may be of any type (for example, channels, rails, rods and so on), of any shape (for example, ring like, horizontal and so on), of any size and in any position (for example, centered on the eyes, placed next to the eyes, above and/or below the eyes and so on).

In an embodiment, the measuring device comprises two sliding components. However, the sliding components may be of any type (for example, rigid, semi-rigid, flexible and so on), of any shape (for example, bars, slants, with constant or variable section, and so on), of any size and of any material (either the same or different with respect to the supporting component).

In an embodiment, the sliding components are mounted on the supporting component so as to be slidable each along a corresponding one Of the guides. However, the sliding components may be coupled with the guides in any way (for example, by means of corresponding coupling elements, simply put onto a support bar and so on); moreover, the sliding elements may be either independent or connected by means of a transmission mechanism which moves them automatically in a symmetrical way with respect to the resting element (each in response to the movement of the other one).

In an embodiment, the supporting component is graduated along the guides for measuring corresponding positions of each of the sliding components with respect to the supporting component. However, the supporting component may be graduated in any way (for example, with any unit of measurement, starting reference, resolution and so on) by means of graduated scales in any position and number (for example, horizontal one or more, transverse, internal and/or external one or more, and so on).

In an embodiment, each of the sliding components is graduated for measuring corresponding positions on the face. However, each sliding component may be graduated in any way (either the same or different with respect to the supporting component) by means of graduated scales in any position and number (for example, longitudinal one or more, transversal one or more, on a single main face or different ones on two main opposite faces and so on); the sliding components may be used to measure any type and number of positions on the face (for example, the 3 points of the corresponding technique, points horizontally between the ears, points horizontally between the two eyebrows and so on).

More generally, it is possible to provide the graduation only on the supporting component, only on one or both the sliding components or any combination thereof.

In an embodiment, each of the guides comprises at least one section which extends in horizontal direction in the condition of use. However, the horizontal sections may be in any position (for example, upper, lower, middle or combination thereof) and in any number (down to zero).

In an embodiment, each of the guides comprises at least one section which extends in direction transversal to the horizontal direction in the condition of use. However, the transversal sections may be of any type (for example, vertical, oblique, curved or combinations thereof), in any position (for example, internal, external, central or combinations thereof) and in any number (down to zero).

In an embodiment, each of the guides comprises a ring section. However, the¾ing section may be of any type (for example, rectangular, round, oval and so on) or it may be completely missing.

In an embodiment, the sliding components are mounted in a rotatable manner with respect to corresponding coupling elements of the sliding components with the corresponding guides. However, the coupling components may be of any type (for example, runners, slides, carriages and so on) and the rotation of the sliding components may be achieved in any way (for example, by means of slot, joint and so on).

In an embodiment, the sliding components comprise corresponding further guides for corresponding coupling elements of the sliding components with the corresponding guides. However, the coupling components may be of any type (see above) and the further guides may be of any type (for example, based on slot, channel, rail and so on).

More generally, the sliding components may be coupled with the sliding component so as to be capable of sliding along the guides, rotate with respect to the coupling elements, translates with respect to the coupling elements or any combination thereof.

In an embodiment, the measuring device comprises corresponding locking elements for the sliding components. However, the locking elements may be of any type (for example, a screw screwed into a runner, a nut screwed into a pin integral with a runner, with or without springs/washers and so on) or they may also be completely omitted (for example, when the sliding components are frictioned to limit any accidental displacements thereof).

In an embodiment, each of the locking elements is adjustable between a passive condition (wherein it allows the corresponding sliding component to move relative to the supporting component) and an active condition (wherein it prevents the corresponding sliding component to move relative to the supporting component). However, the switching between the passive condition and the active condition may be achieved in any way (for example, by rotation, pressure/traction and so on); moreover, the locking element may prevent the movement of the sliding component in any way (for example, by friction, by means of stop pin/tooth and so on).

In an embodiment, each of the sliding components is mounted in a removable manner on the supporting component. However, this may be achieved in any way (for example, by disassembling the coupling element of the sliding component with the guide, by removing the: coupling element through the side opening of the guide and so on); in any case, a simplified implementation is contemplated wherein the sliding components are not removable.

In an embodiment, the measuring device comprises one or more further sliding components each mountable on the supporting component in place of at least one of the sliding components so as to be slidable along the corresponding guide. However, the further sliding components may be in any number (down to zero), of any type (either different or equal to each other and with respect to the sliding components) and they may be used in place of any one of the sliding components or of both of them.

In an embodiment, each of the further sliding components is graduated for measuring corresponding positions on the face. However, each further sliding component may be graduated in any way (either the same or different with respect to the sliding components) for measuring any type and number of positions on the face (see above).

In an embodiment, each of the additional sliding components has a length higher than a common length of the sliding components. However, the further sliding components may have any length (for example, either equal or different); in any case, the possibility is not excluded of having the further sliding components with lengths which are equal as and/or shorter than the common one of the sliding components.

In an embodiment, the measuring device comprises a central opening for marking a reference mark on the face. However, the central opening may be of any type (for example, a slot, a recess and so on) or it may also be completely omitted.

In an embodiment, the supporting component is shaped as a spectacle frame. However, the spectacle frame may be of any type (for example, based on temples, of pince- nez style and so on). More generally, the supporting component may have a different structure. For example, alternatively the supporting component comprises a crown formed by a flexible strip with an elastic lace (or two substantially inextensible laces) attached to free ends thereof; the crown is fitted onto the head by expanding it elastically (or by coupling the two laces to each other, for example, by means of a knot or Velcro).

In an embodiment, the supporting component comprises two rims. However, the rims may be of any type (for example, perimetric, round, pantos, mephisto and so on) or even replaced by two simple bars.

In an embodiment, each rim. accommodates a corresponding one of the guides. However, the guides may be made?; in the rims in any way (for example, internally, superficially and so on) and in any position (for example, along the entire rims^or only along one or more parts thereof, and so on).

In an embodiment, the support component comprises a bridge which joins the rims. However, the bridge may be of any type (for example, saddle like, key like and so on).

In an embodiment, the support component comprises two nose pads each coupled with a corresponding one of the rims to define the resting element. However, the nose pads may be coupled with the rims in any way (for example, integral, mounted and so on) and they may be of any type (for example, fixed, semi-mobile, mobile and so on).

In an embodiment, the support component comprises two temples each hinged to an outer end of a corresponding one of the rims. However, the temples may be of any type (for example, curved, simple, diplo, golf and so on) and hinged to the rims in any way (for example, straight, swing, bent, curved, applied end piece and so on), or they may also be completely missing (for example, by attaching an elastic lace or two inextensible laces as above directly to the front).

In an embodiment, the temples are movable between a closed position (wherein they are folded over the rims to reduce a space occupied by the supporting component) and an open position (wherein they extend transversely to the rims to be worn on corresponding ears of the person). However, the temples may move in any way (for example, by rotating rigidly or elastically, further flexing and so on). Generally, similar considerations apply if the measuring device has a different structure or comprises equivalent components (for example, of different materials) or it has other operative characteristics. In any case, every component thereof may be separated into more elements, or two or more components may be combined together into a single element; moreover, each component may be replicated to support the execution of the corresponding operations in parallel. Moreover, unless specified otherwise, any interaction between different components generally does not need to be continuous, and it may be either direct or indirect through one or more intermediaries.

An embodiment provides a method for designing eyebrows on a face of a person. The method comprises wearing a supporting component onto a head of the person by resting a resting element of the supporting component onto a nose of the person. The method comprises sliding two sliding components mounted on the supporting component each along a corresponding one of two guides symmetrical to the resting element which are arranged o opposite sides of the nose. The method comprises measuring corresponding positions of each of the sliding components with respect to the supporting component by means of a graduation of the supporting component along the guides. In addition or in alternatives, the method comprises measuring corresponding positions on the face by means of corresponding graduations of the sliding components. However, the method may be implemented by anyone (for example, an operator such as a beautician, directly by the person herselfThimself and so on).

In an embodiment, the method comprises marking the positions onto the face. However, the positions may be in any number and type (see above) and they may be marked in any way (for example, with a dot, a line, using a make-up pencil, an ink pen and so on).

In an embodiment, the method comprises drawing at least one of the eyebrows onto the face with reference to the marked positions. However, the eyebrows may be drawn in any way (see above).

Generally, similar considerations apply if the same solution is implemented with an equivalent method (by using similar steps with the same functions of more steps or portions thereof, removing some non-essential steps or adding further optional steps); moreover, the steps may be performed in a different order, concurrently or in an interleaved way (at least in part).