81 Piece Rectangular Steel Gage Block Set ~ Grade AS-0 = Grade 2(A) +4/-2 millionths ~ Meets or exceeds Federal GGG-G-15C. ~ Made of the highest quality tool steel. ~ Surface hardness is HRC 64. ~ Supplied with fitted case with sizes labeled. ~ Blocks included in set are 9 blocks that are .1001″ thru .1009″ with a step of .0001″, 49 blocks that are .101″ thru .149″ with a step of .001″, 19 blocks that are .050″ thru .950″ with a step of .050″ and 4 blocks that are 1.000″ thru 4.000″ with a step of 1.000″. Grade AS-0 = Grade 2(A) +4/-2 millionths Meets or exceeds Federal GGG-G-15C. Made of the highest quality tool steel. Surface hardness is HRC 64. Supplied with fitted case with sizes labeled.
