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, for calipers with c=.630″), data output cable

Insize ISF-S1000-U, DIGITAL SPRING TESTERS, 224lbf, 6940561961379
Standard Abrasives 877008, Unitized Mounted Point, 731 B121 x 1/8 in, 3M 7010310349
3M 01875, Charge-Collection Solar Tape 3011, 2 mm x 1200 m, 7010312686 