Screw plug thread gauge 1 5/8" x 12 un 2B calibrated

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Subject: Screw plug thread gauge 1 5/8" x 12 un 2B calibrated
1 5/8" x 12 UN 2B D/E Screw Plug Gauge GO / NOGO
AS NEW NEVER USED (Protective wax removed from one end)
Calibrated to BS1580/62 BS919/60
Complete with origanal Certificate of Calibration
Manufactured by Threadmaster Gauges
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