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3/4 11 1/2 NH NATIONAL HOSE SET THREAD PLUG GAGE .75 NO GO ONLY P.D.= .9975 N.H.

YOU ARE PURCHASING THE PICTURED NATIONAL HOSE SET THREAD PLUG GAGE.THESE GAGES ARE USED FOR CALIBRATING THREAD RING GAGES ONLY! THEY ARE NOT USED FOR CHECKING THREADED HOLES IN A MACHINED PART!SOLD BY M & J TOOLING LLCDAYTON, OHIOPRODUCT...