Classification Information
PRECISION MEASURING AND OPTICAL INSTRUMENTS, CONSISTING OF PLUG GAGES, BOTH PLAIN AND THREAD, TRILOCK AND TAPERLOCK GAGES, RING GAGES, BOTH PLAIN AND THREAD, THREAD MEASURING WIRES, GEAR MEASURING WIRES, GAGE BLOCKS, BOTH RECTANGULAR AND CYLINDRICAL, OPTICAL FLATS, MONOCHROMATIC LIGHTS, CYLINDRICAL MASTERS, CALIBRATED STEEL BALLS, STEEL FLATS, AND OPTICAL COMPARATORS AND MICROMETER MEASURING STAGEGRINDING, LAPPING, AND FINISHING SERVICES IT PERFORMS ON A VARIETY OF PRECISION
Electrical and Scientific Apparatus