The thread detective is used to identify nuts and bolts. Each size has a nut and bolt checker on the same gauge. The thread sizes are etched on each gauge and the individual gauges rotate freely on the wire cable for fast thread verification. The thread detectives includes gages on a convenient wire cable with a loop to hang on a hook. The inch nut and bolt sizes on the first cable include #6-32, #8-32, #10-32, #10-24, 1/4-28, 1/4-20, 5/16-24, 5/16-18, 3/8-24, 3/8-16, 7/16-20, 7/16-14, 1/2-20 & 1/2-13. The metric nut and bolt sizes on the second cable include M4 x 0.7, M5 x 0.8, M6 x 1.0, M7 x 1.0, M8 x 1.0, M8 x 1.25, M10 x 1.0, M10 x 1.25, M10 x 1.50, M12 x 1.25, M12 x 1.50 & M12 x 1.75. The included 7-In-1 multi-purpose gage is made of tool steel with black coating and laser engraved markings. The multi-gage measures wire gages, drill sizes, drill points, screw pitches, bores and can also be used as a ruler or protractor. This gage includes a tap & drill recommendation chart. The wire gage measures 0.024-0.25-inch. and the drill sizes include #5, #6, #8, #10, #12, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8 & 3/4-inch. The drill points include 60, 90, 118 & 135 degrees and the screw pitch gage measures 40th, 32nd, 24th, 20th, 18th, 16th, 14th, 13th, 12th, 11th & 10th TPI. The bore gages include 1/64-1/2-inch, the ruler is 2-1/2 x 32nds and the protractor measures 15, 30, 45, 60, & 90 degrees.