Model: 01 - Quantity: 1 - Color: Black - LCD display: 1.7" - Measurement range: 4 x 90 degree - Resolution: 0.05 degree / 0.01% - Repeat accuracy: +/-0.1 degree - Working temperature: 0~40'C - Working humidity: 40%~80% - Powered by 2 x CR2032 batteries (Included) - Platform monitoring - Drainage angle and runoff slopes - Working lines of motor graders and tractors - Set the circular saw blade angle - Set lathe tool - Set the angle of the work piece - Set the miter saw blade angle - Set drilling machine the bench angle and saws point - Packing list: - 1 x Protractor - 2 x Batteries