3M 07586, Scotch-Brite Roloc Surface Conditioning Disc TR, 3 in x NH A MED, 7010328979, 1000 per case 
Insize 3594-3, DIGITAL NON-ROTATING SPINDLE DISK MICROMETER, 2-3″/50-75mm, 6928640375224
$596.09
Resolution .00005″/0.001mm
Measure root tangent length of gear.
Non-rotating spindle
Button function: on/off, set, inch/mm, ABS/INC.
Data output. LR44 battery, automatic power off
Ratchet stop.
Supplied with setting standards.
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