Pivot-Arm Square-Head Steel ProtractorEasily set bevels and measure angles with this highly accurate protractor. Permanently etched forward- and reverse-oriented graduations allow you to get a reading from any vantage point. Knurled thumb screw simplifies locking the adjustable arm in place. Ground stainless steel construction ensures professional-grade performance. Degree Graduations: 1°; Material(s): Stainless Steel.