3M 01875, Charge-Collection Solar Tape 3011, 2 mm x 1200 m, 7010312686 
Insize 1189-200B, DIGITAL ARC RADIUS CALIPER, .2-8″/5-200mm, 6928640302497
$499.22
Resolution: .0005″/0.01mm.
Measure the radius of arc less than half round.
Buttons: on/off, zero, inch/mm.
Automatic power off, move the digital unit to turn on power.
Battery CR2032.
Data output.
Made of stainless steel.
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