HHIP 4101-0022 Rectangular Steel Gage Block Set (Grade B), 81 Piece

81 Piece Rectangular Steel Gage Block Set ~ Grade AS-2(B) +/-50 millionths Meets or exceeds Federal GGG-G-15C. ~ Made of the highest quality tool steel. ~ Surface hardness is HRC 64. ~ Complete with manufacturer's calibration or certificate. ~ Supplied with fitted wooden case with sizes labeled.~ Blocks included in set: 9 Blocks: .1001" thru .1009" step of .0001", 49 Blocks: .101" thru .149" step of .001", 19 Blocks: .050" thru .950" step of .050", 4 Blocks: 1.000" thru 4.000" step of 1.000". ~ All calibration conforms to: MIL-STD 45662A, GGG-G-15C, ISO/IEC 17025 Accredited, ISO 9000, 10012-1, ANSI-NCSL Z540-1, ISO GUIDE 25 Certified.