This protractor angle features metric and imperial measurements on ruler edge, plus accurate digital readout, can measure both angle and length, for use in woodworking, construction, or drawing. Doubles as both a digital angle gauge and a protractor for measuring all your workshop angles. Features - Color: Black. - Material: ABS. - Size: 22.00 x 3.50 x 2.00cm/ 8.65 x 1.38 x 0.79 inch. - Measuring range: 0-360°/0-200mm. - Measurement accuracy: 0. centigrade. - The material is super strength engineering material, good rigidity, wear resistance, not easy to deform, not scratch hands. - The product designed come with lock button, easy to lock angle in any position. - There are function of unit conversion, data keeping, reset and automatic power-off. - Angle ruler allows the measurement of inside and outside and and it has hold function to lock the data. - Besides, the ruler supports measurement between metric (mm) and imperial (inch). Package list: 3 x angle ruler