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NPT Thread Plug Gauge/Thread ring gauge pipe thread Ring gauge Precision Gage Pitch Thread Test Tool NPT1/8 NPT1/4 NPT3/8 NPT1/2
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SPI - Threaded Ring Gage: M24 x 3.00 Thread, Metric, Class 6G, No Go - 75890574 - MSC Industrial Supply
VERMONT GAGE, #8-32 Thread Size, Go/No-Go (Plus/Minus), Threaded Ring Gauge - 413N40|361117550 - Grainger
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