【2 in 1 Protractor Ruler.】 The combination of ruler and protractor can determine the length (0-25cm) with a fixed ruler, and measure the length (0-30cm) by moving the ruler. 【Quality material.】 The angle measuring ruler is made of high quality stainless steel for longer durability and abrasion resistance. The surface of the product is smooth, scratch-resistant, wear-resistant and can be used for a long time. 【Easy to use.】 The metal protractor can be rotated 180 degrees by adjusting the nut, and can lock the ruler at a fixed angle at the desired position to measure the angle quickly and easily. 【Accuracy in use.】 The protractor ruler uses a metric scale and can be used to measure angle and length. The graduations on the base and ruler are precisely laser engraved and then filled with black for durability and easy readability. 【Widely Used】Perfect for students, machinists, DIYers, carpenters and woodworking enthusiasts, vehicles maintenance and repair, construction, drafting for