Standard Abrasives 701149, PSA A/O Disc, 1 in x NH, 240, 7010370103 
3M 13627, 947, Hookit Disc Pad Holder, 7 in x 1 in x 5/8 in 5/8-11 Internal, 7000028353 
3M 01875, Charge-Collection Solar Tape 3011, 2 mm x 1200 m, 7010312686 
Insize 1120-2001, DIGITAL INSIDE GROOVE CALIPER, 1.57-8″/40-200mm, 6928640384813
$311.93
Resolution: .0005″/0.01mm.
Measure groove diameter.
Buttons: on/off, set, inch/mm, preset (+, -).
Automatic power off, move the digital unit to turn on power.
Battery CR2032. Data output.
Made of stainless steel.
Optional accessory: depth stop (part no. 6143), data output cable
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