With precision clear accurate readings, our angle protractor is easy to read. It is a 0-360 degrees angle , can measure any angles. The protractor arm can be adjusted to any angle you want, which is easy to use. Features -Color: Assorted. -Material: ABS, alloy. -Size: About 23.00X4.00X1.60cm/9.04X1.57X0.63in. -Measurement accuracy: 0.5°. -Measuring range: 0-999.95°. -Line length: 190mm/7 inches. -Resolution: 0.05°/3'. -Graduation value: 0.05°. - Fine-textured engineering ABS and alloy materials, lightweight, wear-resistant, non-scratch. - 4 in protractor, horizontal and vertical measurement, plane universal measurement. - The clear scale design makes it easy to use and is a great for woodworking. - Enlarged and thickened knobs, easy to tighten, convenient and reliable measurement. - Lock angle feature helps maintain accuracy for use in woodworking, construction, or drawing. Package list: 1 x 4 in angle ruler