Document Type and Number:
Japanese Patent JPS5057471
Kind Code:
A
Abstract:
A level having a working surface provided with a machined opening so that a level vial mounted with its axis coincident with the central plane of the web of the level frame is visible through the opening from directly above the level. A window having downwardly depending bifurcated legs which straddle the web closes the opening and is secured in place by engagement with a pair of vial retaining caps which are fixed on the sides of the web. The outermost surfaces of the legs of the window are serrated to interlock with mating serrations of the inner walls of the vial retaining caps to accommodate dimensional variations of the machined opening and the window.
Application Number:
JP10480274A
Publication Date:
May 19, 1975
Filing Date:
September 11, 1974
Export Citation:
International Classes:
G01C9/34; G01C9/28; (IPC1-7): G01C9/34