Insize 1191-150, DIGITAL INSIDE GROOVE CALIPER, .3-6″/8-150mm, 6928640392542

Resolution: .0005″/0.01mm.
Upper jaws for measuring diameter of grooves
Buttons: on/off, zero, inch/mm.
Automatic power off, move the digital unit to turn on power.
Battery CR2032.
Data output.
Made of stainless steel.