Insize 1120-2001WL, DIGITAL INSIDE GROOVE CALIPER, 1.57-8″/40-200mm, built-in wireless, 6928640384820

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.