10 PIECE GRADE-0 MICROMETER CHECKING GAGE BLOCK SET (4101-0031)

10 Piece Micrometer Checking Gage Block Set Grade AS-0. Grade AS-0= Grade 2(At) : +4/-2 millionth. For checking various spindle positions of entire micrometer range. Meet or exceeds U.S. Federal specification GGG-G-15C and ISO 9000 requirements. Gauge blocks included are .0625, .100, .125, .200, .250, .300, .500, 1.000 & 2.000". Optical flats for checking micrometer flatness are .500 & .5125". Manufacturer's calibration certificate included. Complete with fitted case. Shipping Weight: 1.9 lbs