Dynabrade Nitro Series DS53 .5hp, 14,000 RPM, 3" Right Angle Disc Sander 
Dynabrade 50884 - 5" (127 mm) Dia. Non-Vacuum Wey/Dry Sander Disc Pad, Hook-Face, Short Nap 
Insize 2235-4, INTERNAL THREAD PITCH MEASURING INSTRUMENT, 12.7-101.6mm/.5-4″, 6928640384615
$1,927.05
Dial indicator graduation 0.01mm
Accuracy 0.02mm
Measure the pitch of internal thread with nominal diameter larger than 1 1/2″(38.1mm) and less than 5 1/2″(139.7mm)
Optional accessory: ball points, standard pitch blocks
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