Insize 1535-100WL, DIGITAL OUTSIDE GROOVE CALIPER, 0-4″/0-100mm, built-in wireless, 6940561961102

Resolution .0005″/0.01mm
Measure grooves and recesses in small spaces
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