Digital protractor for measuring internal and external angles. Equipped with a locking screw to hold a certain angle. Measuring range ± 360 °. Accuracy ± 0.3 °. Working temperature 0-50°C. Automatic shutdown. Zero setting in any position. 1 mm and 1/32 inch ruler scales. Ruler cross-section 35 x 2.5 mm. Two mounting holes. Locking screws. Power supply 1 battery type CR2032 3V.

• Instructional video