Dynabrade 91315 11-1/4" Dia. x 36 Grit A/O Non-Vacuum Hook-Face DynaCut Disc, 10/Box 
Insize 2234-4E, THREAD PITCH MEASURING INSTRUMENT, 0.5-4″/12.7-101.6mm, 6928640384622
$1,919.53
Dial indicator graduation .0005″
Accuracy .0008″
Measure the pitch of external thread and inter thread with nominal diameter larger than 5 1/2″(139.7mm)
Optional accessory: ball points, standard pitch blocks
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