This is a set of gauges for identifying thread pitch (the spacing between threads in a bolt or nut). This tool does not measure the actual thread pitch: it just tells you which standard pitch your bolt is closest to. To measure a non-standard thread you would use a caliper or optical comparator.
Location: Box 37
Have you used this tool? Think my description is all wrong? Have a better example? Comment now with any thoughts you have about this tool!
