Rectangular gage block sets are supplied with a Mitutoyo certificate of inspection that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 standard for flatness, length, parallelism, and surface finish
The Mitutoyo metric rectangular wear gage block sets are designed to be used on the ends of stacked gage block sets to prevent wear.
Advanced lapping techniques achieve the best flatness, surface roughness needed for gage blocks
Black characters on gage blocks are inscribed by laser and clearly visible