CLEAR AND EASY TO READ: Magnetic goniometer, brown high-impact visibility body, clear lens, easy to read in 4 quadrants in 0-90 degree increments, V-grooved edge accommodates pipes and pipes, super strong and permanent Ceramic magnet with convenient metric ruler on one side and imperial ruler on the other. Great tool for finding any angle: Magnetic goniometers are designed for use with appliances, pipes, and require strong magnetic contact with pipes, conduits, or other iron surfaces to accurately identify angles. It is very easy to use. As long as you place it on any inclined surface, the sphere will point at a 180-degree angle. Sturdy and durable: Made of plastic material, it is shock-resistant, UV-resistant, and leak-proof. Dimensions: 95x30x105mm material: plastic Color: white, transparent Package Contents: 1 x angle positioner Contains only the above package contents and does not include other products. Note: Lighting and different monitors may cause the color of the item in the picture to be slightly different from the actual item. The measurement allowable error is +/-1-3cm.