Product Description: You can measure the angle of various locations. By twisting the nut, you can fix the angle and measure it. Made of aluminum alloy, so it is rust and not easy to deform. It can be folded for easy storage. Product Specifications: Color: Silver, Material: Aluminum Alloy, Multi-functional Scale, Angle Meter, Protractor, For Building, Sliding Type, Angle Scale, Ruler, Angle Measurement, Aluminum Alloy, Rustproof, Convenient Storage, Foldable.