The Starrett C391 Center Gage is the ideal tool for checking the number of threads per inch on American Standard or US 60 degrees threads. The tool has graduations in 14ths, 20ths, 24ths and 32nds. Made of tempered steel, this center gage has a satin chrome finish. It features a 60 degree angle and +/-15 min accuracy. The unified thread type makes it compatible with American Standard or US 60 degrees threads. You will be able to measure accurately with the Starrett C391 Center Gage.
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