(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories

    180 Degrees Stainless Steel Angle Protractor, 120x200mm

    180 degree metal angle protractor is designed to be versatile and can be easily converted between different measuring units, making it ideal for a wide range of applications. With its compact design, the angle protractor is a practical measuring tool for students, craftsmen, architects and designers.
    SKU: ATO-AP-1200
    This product has a minimum quantity of 5
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Our stainless steel angle protractors are affordable and of the highest quality, with an adjustable measuring range of 0 to 180 degrees and an angle ruler size of 120x200mm. Whether you need to measure angles in degrees, radians or other units, our angle protractors will meet your needs.


    • Model: ATO-AP-1220
    • Measuring Range: 0-180 degrees
    • Size: 120x200mm
    • Total Body Length: 267mm
    • Diameter of Disc: 120mm
    • Width: 14mm
    • Body Thickness: 1mm
    • Weight: 127g


    • Stainless steel angle protractors are highly accurate and precise in measuring angles, ensuring that your measurements are as close to perfect as possible.
    • The 180-degree angle finder ruler has a laser scale for accurate and practical reading.
    • The stainless steel construction of angle protractors makes them very durable and resistant to wear and tear, ensuring they can withstand frequent use and last for a long time.
    • The stainless steel angle protractor is lightweight and compact, making them easy to carry around and use on the go.

    Scribing method

    Angle protractor scribing method

    1. Adjust the protractor to the right angle and tighten the nut.
    2. Draw the desired angle and figure along the edge of the ruler.

    Measuring Method

    Angle protractor measuring method

    1. Fit the protractor measurement close to the work.
    2. Adjust the semicircle to fit the other side of the workpiece.
    3. Just take a reading.

    Dimension (Unit: mm)

    120x200mm Angle protractor dimension



    Angle protractors are commonly used in fields such as construction, engineering, and carpentry to measure angles for cutting and fitting materials. They are also used in mathematics and physics to solve problems involving angles and trigonometry.
    Angle protractor applications

    Tips: How does an angle protractor work?

    An angle protractor is a tool that is used to measure angles in degrees. It consists of a flat base with a graduated semi-circle or full circle on it. This circle is marked with degree markings from 0 to 180 degrees (in the case of a semi-circle) or 0 to 360 degrees (in the case of a full circle).

    To use an angle protractor, you place the base of the protractor on the vertex (point where two lines meet) of the angle you want to measure. The zero degree mark on the protractor should be lined up with one of the arms of the angle. Then, you read the degree measure of the angle off the protractor where the other arm intersects the circle.

    The protractor works based on the principles of geometry and trigonometry. It uses the fact that angles are measured as the ratio of the length of the arc subtended by the angle to the radius of the circle. By measuring the length of the arc on the circle and knowing the radius, the angle can be calculated using trigonometric functions such as sine, cosine, or tangent.

    Write your review for 180 Degrees Stainless Steel Angle Protractor, 120x200mm
    • Only registered users can write reviews
    • Bad
    • Excellent