81pcs 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 are accompanied with a certificate of inspection listing the deviation for each block
Each gage block set meets or exceeds federal specification GGG-G-15C (P900-S581).
Each gage block set meets or exceeds federal specification ASME B89.1.9-2002. (P900-S582, P900-S583).
All gage block sets are made to special standard to resist corrosion and defacement
The coefficient of thermal expansion is 6.4x10.
ZZW PRECISION TOOL SUPPLY (SHANGHAI)CO.,LTD
Add: #4F, No.6 Building, #528 RuiQing Rd., East ZhangJiang,
PuDong 201201, Shanghai,P.R.China