3M 27709, Cubitron II Roloc Durable Edge Disc 984F, 60+, YF-weight, TR, Maroon, 2 in, Die R200P, 7100001475, 200 per case 
Insize 3294-1, NON ROTATING SPINDLE DISK MICROMETER, 0-1″, 6928640328152
$264.28
Graduation .0001″.
Measure root tangent length of gear.
Non-rotating spindle.
Ratchet stop.
Supplied with setting standards
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