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

3M 25642, Cloth Belt 341D, 80 X-weight, 4 in x 132 in, Film-lok, Single-flex, 7010298930, 25 per case
3M 81356, Venture Tape White Aluminum Foil Tape 1558HT, 72 mm a 45.7 m, 5.4 mil, 7010335933
3M 45029, Diamond Grade Digital Reflective Sheeting 3924SUDS, Fluorescent Orange, 30 in x 50 yd, 1 Roll/Case, 7100282407
3M 26104, PPS Series 2.0 Adapter, Type S20, 1/8 Male, 27 Thread NPSM, 7100135929
Dynabrade 78295 3" Dia. x 6A M Medium Type R Unitized Locking-Type Disc, 25/pack
3M 27468, EMI Copper Foil Shielding Tape 1181, 1 in x 18 yd (25,40 mm x 16,5 m), 7000132169
Standard Abrasives 42699, A/O Flexible Flap Wheel 621426, 1 in x 1 in x 1/4-20 in 80, 7010369136, 10 per case
3M 62612, Scotch-Weld Threadlocker TL71, Red, 10 mL Bottle, 7100039197, 10/case
Dynabrade 54430 4" Dia. Extended Right Angle Disc Sander, Steel Housing, Rear Exhaust, .7 HP, 12,000 RPM, 3/8"-24 Thread
3M 26003, PPS Series 2.0 Adapter, Type S2c, 16 mm Female, 1.5 mmThread, 7100135338
Air Turbine Tools 2590SVF - 6mm Angle Hand Tool Series (Long Version, Front Exhaust), 30,000RPM, 35833
3M 87153, Cubitron II Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 in, 7100103313, 20 per case
Dynabrade 77768 5" Dia. x 7/8" Center Holes, 60 Grit, Z/A, Type 27, DynaCut Flap Disc w/Fiberglass, 10/pack
3M 01875, Charge-Collection Solar Tape 3011, 2 mm x 1200 m, 7010312686 