The indicator reads accurately against degree markings on the outer rim. A built-in vernier lets you measure to 12' of arc (1/5°). The magnetic base allows you to attach the inclinometer to a steel bar or pipe for greater accuracy. Also, a steel ruler can be clipped onto the back to extend the base. It measures only 1/2" x 2-3/8" x 3".
A versatile system for levelling, setting, or determining slopes.