To provide an instrument device in which deterioration of appearance is prevented in movements of a frame part that constitutes a frame of a pointer-type instrument and an instrument image that shows a part of the pointer-type instrument.

When a frame part of a pointer-type instrument body 20L is at a position A, a control unit of an instrument device displays an index part 13L in an area A, and when the frame part is at a position B, the control unit displays the index part 13L in an area B. During a movement of the frame part from the position A to the position B, the control unit moves the index part 13L from the area A to the area B while deforming the index part 13L so that measured values cannot be visually recognized.