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 6105-00-473-6143
NSN 5920-01-464-2098
NSN 5945-00-365-6259
NSN 5996-01-542-8611
NSN 5999-01-407-6450
NSN 6645-00-127-3835
NSN 5945-01-119-5402
NSN 6610-00-764-4015
NSN 5910-01-625-3835
NSN 5855-00-466-2309
NSN 5998-00-097-3363
NSN 5960-01-476-5686