Feature●Flat Crystal Cover for Dial Indicator Thickness Indicator Transparent Lid●Fits Dial indicator CDI, S-T, Standard, Starrett, Teclock etc.●It does not mean that every indicator or caliper made by that manufacturer can use that crystal.●Item: Curved Crystal 42.5mm Diameter.●Package:1 Crystal Cover.DataCaciquesDescription NOTE： Please check the size carefully. Fits Dial indicator CDI, S-T, Standard, Starrett, Teclock etc.It does not mean that every indicator or caliper made by that manufacturer can use that crystal. Item: Curved Crystal 42.5mm Diameter. Package:1 Crystal Cover.DataCaciques