Air Turbine Tools 230DM - 6mm Straight Hand Tool Series, 30,000 RPM, 32733 
Air Turbine Tools 525XSV - 6mm Straight Hand Tool Series, 30,000 RPM, 42531 
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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