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

Insize 7231, SCRIBER, 6928640320071
3M 26105, PPS Series 2.0 Adapter, Type S21, 14 mm Female, 1.0 mm
Thread, 7100135829
Dynabrade 78591 3/8" Dia. x 1" W x 1/8" Center Hole, 80 Grit, 100/pack
Standard Abrasives 42692, A/O Flexible Flap Wheel 615128, 3 in x 1/2 in x 1/4 in 120, 7010310504, 10 per case
Dynabrade 92118 1/4" W x 12" L 180 Grit A/O DynaCut Belt, 50/pack
3M 17394, VFlex Particulate Respirator 9105S, N95, Small, 7000030028, 400 EA/Case
Norton 66261096557 - 3" X 1/2" Blaze Rapid Strip Ceramic Alumina Extra Coarse Grade Non- Woven Abrasive Disc With Quick Change TR III Attachment, 25 Each
Norton 66261014793 - 3" Medium Grade Aluminum Oxide Bear-Tex Speed-Lok High Strength Maroon TR Non-Woven Abrasive Disc, 80 Each
3M 33440, Cubitron II File Belt, 33440, 80+, 10 mm x 330 mm (3/8 in x 13 in), 7100033195, 10 belts per carton, 5 cartons per case 