112Pcs/Set 1 Grade 0 Grade Inspection Block Gauge, Test Caliper Blocks Measurement Instruments ,Easy to Use

112 pcs Grade 0, Grade 1 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 Easy to use in precision clamping of parts in boring, milling, prinding, assembly work, etc. Hardened to HRC 64 / All gage block sets are made to special standard to resist corrosion and defacement.