Tolerance : 0.3 Resolution: 0.1 Material: Stainless steel ruler body, ABS plastic cover Measuring range: 0-360 Specifications: 0-200mm Scale process: laser scale Power mode: 1*CR2032 3V (included) Features: Two-in-one angle ruler + ruler, 360 full measurement, any position lock angle, data hold. Ruler and digital protractor: A ruler with the function of digital protractor, able to measure the length as well as the angle at the same time. Say goodbye to complicated measuring or plotting work. Zero to any position (taring): Press the small inchzeroinch button for a second, the value on the angle screen will be reset to zero and you can start the measurement at any angle. Turn the large knob in the center to lock/unlock the ruler at any angle, to prevent shifting or loss of the measured angle. Simple but durable: Simple design, but made of stainless steel, an excellent material and exceptional strength. Delivery quantity: One piece