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 6130-01-546-1505
NSN 7035-01-501-9118
NSN 5996-00-860-8154
NSN 6110-00-877-2940
NSN 6645-01-338-7066
NSN 5925-01-391-4986
NSN 6220-00-330-3717
NSN 6320-01-541-7585
NSN 5925-00-770-4068
NSN 5950-00-117-8121
NSN 6240-01-234-7893
NSN 6610-00-845-7642