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

Norton 66261014921 - 2" X 1/8" 50 - 80 Grit Coarse Grade Aluminum Oxide Bear-Tex Speed-Lok Rapid Blend Gray TR Non-Woven Unified Wheel, 60 Each
3M 01328, Stikit Gold Film Disc Roll, 6 in, P220 grade, 7010308781, 75 discs per roll
Dynabrade 95675 1/4" Male Plug with 1/4" NPT Male Thread
Dynabrade 91166 1/2" W x 13" L 80 Grit A/O DynaCut Belt, 50/pack
Insize 4809, U.S. STAND SHEET METAL GAGE, 0-36(.3125~.0070"), 6928640330162
Standard Abrasives 706317, A/O Straight Cartridge Roll, 1/4 in x 1 in x 1/8 in 100, 7100080010
Dynabrade 78402 2" Dia. x 1/2", Dyna Premium Rapid Strip TR Disc, 25/pack
3M 98869, Polyimide Tape 8998, Dark Amber, 3 in x 36 yd, 3.3 mil, 12 rolls percase, 7100059599
3M 65857, Aluminum Foil Tape 34383, Silver, 3 in x 60 yd, 4.5 Mil, 7010331864
3M 16299, PPS Lid Dispenser: Large, Standard, or Midi, 7100042072
3M 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093
3M 19795, Utility Cloth Roll 314D, P400 J-weight, 1-1/2 in x 20 yd, 7100081717
3M 33446, Cubitron II File Belt, 80+, 1/2 in x 18 in (12.7 mm x 457.2 mm), 7100033186, 10 belts per carton, 5 cartons per case 