A rectangular or square precision tool having a flat working surface(s) of specific flatness. It is used as a datum plane in connection with various layout, inspection, and calibration operations. It may also be used as a lapping plate, but is not grooved. See also block, lapping; plate, duplex, surface and lapping; and plate, lapping.
NSN 6110-01-176-7529
NSN 5985-00-490-2834
NSN 6105-01-322-0303
NSN 5925-00-597-1558
NSN 6650-01-092-0017
NSN 7035-00-803-3056
NSN 5895-00-478-9289
NSN 5835-00-148-9719
NSN 5915-01-603-0012
NSN 6130-01-472-8526
NSN 5999-00-073-8786
NSN 5975-00-364-6919