81 pc Grade B Steel Gage Block Set with MFG'S certificate
Manufactured under carefully controlled conditions allowing for the highest degrees of accuracy when used at a temperature of 68 degrees F. (20 C).
All gage block sets are assigned serial numbers and accompanied with a certificate of inspection listing the deviation for each block
Each gage block set meets or exceeds federal specification ASME B89.1.9-2002.
Hardened to HRC 64 / All gage block sets are made to special standard to resist corrosion and defacement