Micrometer Calibration Set

• Grade Ø
• 11 Pc. 9 rectangular gage blocks and two optical flats.
• Includes NIST Certificate.
• Contains one block of each of the following sizes: .0625, .100, .125, .200, .250, .300, .500, 1.000 & 2.000"
• TWO OPTICAL FLATS that vary in size by .0125" which  allows checking anvil faces at half revolutions of spindle for measuring flatness.
• Supplied with fitted wooden case