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 6150-01-277-4671
NSN 6130-00-929-6699
NSN 5998-01-625-3698
NSN 5895-01-579-9099
NSN 5915-01-310-8560
NSN 6145-01-373-5059
NSN 5990-00-038-6482
NSN 5975-01-012-3538
NSN 5990-01-334-6416
NSN 6610-00-597-5671
NSN 5835-01-029-1702
NSN 6650-00-820-4577