Insize 1120-3001WL, DIGITAL INSIDE GROOVE CALIPER, 1.97-12″/50-300mm, buit-in wireless, 6928640384844

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.