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 5910-01-481-3023
NSN 6240-01-245-9788
NSN 5975-00-470-2320
NSN 5835-00-949-3018
NSN 5895-00-021-8879
NSN 5895-00-436-0355
NSN 5999-01-544-0651
NSN 5855-00-427-7848
NSN 6220-01-367-5537
NSN 5950-01-189-3194
NSN 6240-01-234-6053
NSN 5895-00-150-7072