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 5895-01-090-9439
NSN 6685-01-359-7872
NSN 5998-01-574-9902
NSN 5990-00-008-1828
NSN 5998-00-205-4138
NSN 5855-01-641-7915
NSN 5985-01-014-2069
NSN 5950-01-487-7198
NSN 5990-01-641-1492
NSN 5998-01-062-1900
NSN 5985-01-639-8150
NSN 5999-01-437-6770