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 11475 Dynabelter Abrasive Belt Tool, Standard Duty
3M 43474, Glass Cloth Tape 3615, White, 1 in x 36 yd, 7 mil, 7000048876
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
3M 19770, Utility Cloth Sheet 314D, 9 in x 11 in P120 J-weight, 7000000358
3M 83980, Roloc Disc Pad TR, Extra Hard 4 in 5/8 -11 Internal, 7000119300
Insize 1120-200AWL, DIGITAL INSIDE GROOVE CALIPER, .98-8"/25-200mm, built-in wireless, 6928640384776
Dynabrade 91429 1/2" W x 12" L 80 Grit A/O DynaCut Belt, 50/pack
Dynabrade 92206 1/8" W x 12" L 80 Grit A/O DynaCut Belt , 50/pack
ACS CX1250 Diamond Belt, 1/2" X 24" 125u
Dynabrade 97568 3/8" NPT Female Safety Coupler
3M 28764, Cubitron II Cut and Grind Wheel, Type 27 Quick Change, 6 in x 1/8 in x 5/8"-11, 7100019069, 20 per case
3M 85492, Scotch Foil Tape 3311-10A, 2.0 in x 10 yd (50.8 mm x 9,1 m), 7010383663 