Insize 2171-250, DIGITAL PROTRACTOR, Size (L) 10″, 0-360?, 6928640317347

Buttons: on/off, hold (keep the reading), zero, ABS (absolute and incremental measurement)
Fix the locking screw at 4 positions for different measuring ranges: 0?~225?, -225?~0?, -45?~180?, -180?~45?.
Remove the locking screw for 360? range.
With level vial.
Battery CR2032.
Automatic power off.