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 5945-01-058-3552
NSN 5905-01-302-5888
NSN 5930-01-375-6651
NSN 5945-01-045-0473
NSN 5950-01-646-9792
NSN 5945-01-514-2964
NSN 6645-01-456-8021
NSN 5996-00-471-0540
NSN 5950-01-460-5416
NSN 5985-01-530-0053
NSN 5999-01-092-1426
NSN 5960-01-254-3541