Review on GemRed Aluminium Digital Angle Finder by Ryan Chaplain

This is the best digital protractor for the price I have ever used. This is accurate after zeroing - it was extremely accurate for half a degree increments, which is the smallest I need. This is repeated, going back and forth 90 degrees several times, reading 90 degrees each time. The pull/friction knob works well. Also, it doesn't eat up batteries when it's turned off like some of those digital sensors do. Very happy with it for the price!