Steel Center Gage, 60 Deg Range, American Unified National Standard
American National or U.S. 60 Deg standards
Extremely handy for use in grinding and setting screw cutting tools
Gage also has a table of double depths of threads for determining size of tap drills.
Ground gaging surfaces
Made of spring-tempered steel with satin chrome finish.
Very useful for finding number of threads per inch through graduations in 14ths, 20ths, 24ths and 32nds of an inch.
