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 10455, Cloth Sheet 481W, 220, 9 in x 11 in, 7010294811
3M 26016, PPS Series 2.0 Adapter, Type S9, 16 mm Male, 1.5 mm Thread, 7100135330
Insize 0020-A199, VIBRATION PEN (THREE PARAMETERS), 6974029777059
3M 26024, PPS Series 2.0 Spray Cup System Kit, Large (28 fl oz, 850mL), 200 Micron Filter, 7100134650
3M 5677, DISC PAD HOLDER 914, 4 IN X 1/8 IN X 3/8 IN M14-2.0 INTERNAL, 7010299278
Dynabrade 91427 1/4" W x 12" L 120 Grit A/O DynaCut Belt, 50/pack
3M 45097, Roloc Disc Pad TR, Extra Hard 2 in 1/4-20 Internal, 7000045284
Dynabrade 78597 3/8" Dia. x 1-1/2" W x 1/8" Center Hole, 180 Grit, 100/pack
3M 26199, PPS Series 2.0 Lid, Standard/Large, 125 Micron Filter, 7100135628
3M 26022, PPS Series 2.0 Adapter, Type S12, 10 mm Male, 1.0 mm Thread, 7100135943
Dynabrade 52402 2" (51 mm) Dia. 7 Degree Offset Disc Sander, Front Exhaust, .5 HP, 20,000 RPM, 1/4"-20 Thread
3M 85492, Scotch Foil Tape 3311-10A, 2.0 in x 10 yd (50.8 mm x 9,1 m), 7010383663 