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 5950-01-585-8944
NSN 6650-01-112-0453
NSN 5996-01-349-2140
NSN 6150-01-605-0959
NSN 5910-01-435-7342
NSN 6645-01-617-3354
NSN 5895-00-433-0337
NSN 5935-01-162-0927
NSN 5975-01-464-9164
NSN 5915-00-062-6815
NSN 5935-00-366-0085
NSN 6220-01-368-3119