Measure the groove diameter of shafts and keyways
Absolute encoder, the original data remains after power off
One turn of sleeve makes .2″ spindle feed
Measurement accuracy is not affected by the use of sleeve
Press the fork, the spindle retracts .12″
Linear ball bearings for ten million times use
Carbide spindle and anvil

3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
Dynabrade 78602 1/2" Dia. x 1" W x 1/8" Center Hole, 60 Grit, 100/pack
3M 19936, Neoprene High Performance Rubber and Gasket Adhesive 1300L, Yellow, 5 Gallon Pour Spout Drum (Pail), 7100022994 
