35 to 75 degree BS2704 and ISO 7963 calibration block
Specification:
Standard made to – BS 2704 (Tolerance +/- 0.1mm)
Blocks available off the shelf are-
ULCA-20008 Carbon Steel, 12.5mm thick with 1.5mm hole
ULCA-20008B Carbon Steel, 20mm thick with 3mm hole
ULCA-20008S Stainless Steel, 12.5mm thick with 1.5mm hole