Measure radius of external arc, arc angle of measured surface should be larger than 90?
Resolution .0005″/0.01mm
Buttons: on/off, set, inch/mm, preset (+, -)
Automatic power off, move the digital unit to turn on power
Battery CR2032, Data outputMade of stainless steel
Supplied with pin gage for zero setting

Dynabrade 12132 Pin
Dynabrade X62H 6" (152 mm) Dia. Non-Vacuum Dynorbital Extreme Random Orbital Sander, .3 HP, 12,000 RPM, 3/32" Orbit, Hook-Face
Dynabrade 52833 1/4" Drill, .4 HP, Rear Exhaust, 2,400 RPM
Dynabrade 93343 Carbide Burr, 1/8" Dia., SE-41 D/C Burr, Oval, 7/32" Flute L, 1/8" Shank
Dynabrade 82564 1/4" W x 18" L 120 Grit Ceramic DynaCut Belt, 50/pack
Dynabrade 69359 Muffler Body
Dynabrade 13060 5/8"-11 Female _ 5/8"-11 Male, 4" Length
Dynabrade 50281 4-1/2" Dia. Disc Pad, Spiral-Face, Medium Density, 5/8"-11 Thread 
