A tool of various shapes and design used primarily for checking the point angle of twist drills or as a standard for accurately grinding the point on twist drills. Some types may be used as a hook rule, plain rule, depth gage, height gage, try square, level, slide caliper, countersink gage, or any combination thereof. A portion of the tool, or a combination of assembled parts forms either a 59 degree or a 118 degree angle. See also square, double.
Classification: Other measuring or checking instruments, appliances and machines, nesoi in chapter 90
NSN 5935-01-303-1427
NSN 5999-01-003-8461
NSN 5965-00-246-5612
NSN 6320-01-087-7961
NSN 6650-00-170-5095
NSN 5915-01-392-0944
NSN 5920-01-089-7903
NSN 6150-00-835-2397
NSN 5925-00-170-4090
NSN 6610-00-922-6770
NSN 5990-01-423-8189
NSN 6110-00-300-9088