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 14000 Dynafile Abrasive Belt Tool
Standard Abrasives 840338, Quick Change Surface Conditioning GP Disc, A/O Medium, TSM, MAR, 2 in, Die QS200PM, 7000121650, 50/case
3M 19770, Utility Cloth Sheet 314D, 9 in x 11 in P120 J-weight, 7000000358
Insize 4804-26E, RADIUS GAGE SET, .010"?.5", 6928640330094
3M 76783, Cubitron II Hookit Cloth Disc 784F, 120+ XF-weight, 5 in x NH, Die 500X, 7100222757
Dynabrade 78599 3/8" Dia. x 2" W x 1/8" Center Hole, 80 Grit, 100/pack
3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
3M 06466, Cut & Grind Wheel, Type 27, 6 in x 1/8 in x 5/8"-11, Quick Change, 7100218055, 20 per case
3M 30137, Heavy Duty Canvas Wheel Masker, 20 inch, 7100145359, 4 per pack
Dynabrade 92209 1/8" W x 12" L 220 Grit A/O DynaCut Belt, 50/pack
Dynabrade 15003 Mini-Dynafile II Abrasive Belt Tool
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
3M 19769, Utility Cloth Sheet 314D, 9 in x 11 in P150 J-weight, 7000000357
3M 15041, Scotch Electrical Shielding Tape 24, 1 in x 15 ft (25 mm x 4,6 m), 7000031348 