81 pcs/set precision gage block set, rectangular, grade A+ (also called grade 2, or inspection grade)----w. tollerance of 5 millionth of inch.
with serial number and size.
Complete with NIST Traceable certificate of calibration showing deviation of each block. Meets or exceed Fed. Spec. GGG-G-15C and Conform to MIL-STDD-45662A
9 blocks: .1001" - .1009" in .0001" steps
49 blocks: .101" - .149" in .001" steps
19 blocks: .050" - .950" in .050" steps
4 blocks: 1.000" - 4.000" in 1.000" steps
Fitted in heavy duty and precision made wooden box.
We will pay to get updated NIST traceable certs before shippingto you! Calibrated In a famous Michigan Lab.