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 78176 2" Dia. Medium NWN VT DynaBrite TR Locking-Type Disc, 25/pack
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
Dynabrade 78122 2" Dia. Medium NWN DynaBrite Locking-Type Disc, 25/pack
3M 35083, EMI Copper Foil Shielding Tape 1181, 1/4 in x 18 yd (6,35 mm x 16,5 m), 7000132168
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
Insize 6140, DEPTH BASE ATTACHMENT, suitable for calipers with beam width (w) .630", 6928640303579
3M 86431, Scotch-Weld Multi-Material Composite Urethane Adhesive DP6330NS,Green, 48.5 mL Duo-Pak, 7100109828, 12/Case
Dynabrade 91425 1/4" W x 12" L 60 Grit A/O DynaCut Belt, 50/pack
3M 20967, Portable Utility Cloth Roll 314D, P240 J-weight, 1 in x 20 yd, 7010290604
Dynabrade 78584 1/4" Dia. x 1-1/2" W x 1/8" Center Hole, 80 Grit, 100/pack
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
Standard Abrasives 713159, Aluminum Oxide Handy Roll, P120 J-weight, 1-1/2 in x 50 yd, 7010290409
3M 19771, Utility Cloth Sheet 314D, 9 in x 11 in P100 J-weight, 7000021272
3M 01328, Stikit Gold Film Disc Roll, 6 in, P220 grade, 7010308781, 75 discs per roll
Dynabrade 52402 2" (51 mm) Dia. 7 Degree Offset Disc Sander, Front Exhaust, .5 HP, 20,000 RPM, 1/4"-20 Thread
3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
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
Dynabrade 51854 .4 hp Trim Router (Complete), 30,000 RPM, 1/4 Collet
Dynabrade 50321 4-1/2" Dia. Pistol Grip Disc Sander, Rear Exhaust, .7 HP, 11,000 RPM, 5/8"-11 Thread
3M 95725, Venture Tape Metal Building Facing Tape 1552CW, White, 72 mm x 45.7 m, 7010313505
Dynabrade 79174 2" W x 30" L 80 Grit Ceramic DynaCut Belt, 10/pack
3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
Standard Abrasives 712287, Aluminum Oxide Spiral Band, 120, 1 in x 1 in, 7100138187
3M 50010, VentureClad Insulation Jacketing Tape 1577CW-WME, White, 99 mm x 13.7 m, 7010379907 