No other part numbers with same form, fit, and function found.
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 5998-01-430-2321
NSN 6240-01-359-9807
NSN 5998-00-403-3089
NSN 5895-01-423-1378
NSN 5990-01-245-7299
NSN 5975-01-234-8001
NSN 5905-01-627-7176
NSN 5915-00-601-2628
NSN 6150-00-689-6309
NSN 7035-01-267-4077
NSN 6610-01-357-5957
NSN 6145-01-515-6609