3M 82975, Roloc D/F Cool Running Disc Pad TR, 3 in 1/4-20 Internal, 7010309116 
Insize 2112-101E, DIGITAL INDICATOR (standard model), .5″/12.7mm, lug back, 6928640329388
$331.86
Resolution .00005″/0.001mm
Meet ASME B89.1.10M-2001.
Button function: on/off, inch/mm, zero.
CR2032 battery, automatic power off.
Data output.
Optional accessory: data output cable, backs, contact points
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