Grade b/toolroom/two ledge; flatness is 0.00034; thickness is 4 in; net weight is 365 lbs
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 6645-01-510-1984
NSN 5920-00-224-1634
NSN 5910-01-462-4025
NSN 6610-00-105-9663
NSN 5999-00-625-6908
NSN 6620-01-623-7266
NSN 5920-01-468-5911
NSN 6130-00-647-8471
NSN 5905-00-186-0942
NSN 5920-01-512-4191
NSN 5998-00-885-7987
NSN 6110-00-913-2574