Description:1. Thick high-quality stainless steel, the ruler body is not easy to bend2. Tighten the screw, you can lock the clamp angle at any time for marking the measurement3. Special craft laser scale, clear and accurate reading, easy to use4. Arbitrary 0-180 rotation, convenient for the needs of multi-angle measurement5. One foot for multiple purposes to solve daily needs, such as carpentry decoration, student homework, architectural design, etc. Product Parameters:Product Name: ProtractorSpecification: 0-100mm/0-150mm Material: Stainless Steel Measuring Degree: 0-180 Degree Accuracy: 1Applicable to: Painting, Working, Measuring, Learning Package Contents: 1 x ProtractorNote: This is a simple protractor, not a precision measurement. The angle measurement error is 1.