Stainless Steel Protractor 0-180° Angle Gauge Arm Measuring Ruler Engineer's Tool Protractor with 140mm Ruler, Universal Angle Ruler for Drawing and Painting

Material: The angle measuring ruler is made of high-quality stainless steel. The product's surface is smooth, scratch-resistant, wear-resistant, and rust-resistant, ensuring long-lasting use. Unique Design: This two-in-one stainless steel square ruler can not only accurately measure angles from 0° to 180° but also easily and quickly measure lengths from 0 to 140 mm. Easy to Use: The metal protractor can be rotated 180 degrees by adjusting the nut and locked in the desired position at a fixed angle, allowing for quick and easy angle measurements. Wide Range of Applications: Protractors are essential tools in many fields, commonly used in machinery, crafts, construction engineering, building and maintenance engineering, and more, and can be used in homes, offices, and schools.