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 08749, High Bond Rearview Mirror Adhesive, 0.02 fl oz, 7010364470, 12 per case
Dynabrade 51301 .5 hp Straight-Line Die Grinder
3M 29831, Sanding Screen, 180 Grit, 18 in x NH, 7100160238
3M 99465, Scotch Dry Erase Tape 1905R-DE-BLU, 1.88 in x 5 yd (47,7 mm x 4,57 m),Blue Dry Erase,3 per inner, 4 inners, 12 per case, 7010372545
3M 33439, Cubitron II File Belt, 33439, 60+, 10 mm x 330 mm (3/8 in x 13 in), 7100033194, 10 belts per carton, 5 cartons per case
3M 97421, Aluminum Foil Tape 3380, Silver, 72 mm x 45 m, 3.25 mil, 7010375681 