Air Turbine Tools 2545SVR - 6mm Angle Hand Tool Series (Long Version, Rear Exhaust), 30,000RPM, 35531 
Insize 3294-4, NON ROTATING SPINDLE DISK MICROMETER, 3-4″, 6928640375514
$368.25
Graduation .0001″.
Measure root tangent length of gear.
Non-rotating spindle.
Ratchet stop.
Supplied with setting standards
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