DASCO PRO AF700M Angle Finder with Magnet, 0 to 90 deg, Plastic

Dasco Pro angle finders are molded of high-impact plastic and allow the user to read any angle instantly and accurately from 0 to 90 deg in any quadrant. Accurate to within 0.5 of 1 deg. Not affected by magnetic fields, cold or heat. Angle and grade chart on back shows angles in degrees and converts them to pitch per inch and pitch per foot.