MAIN FEATURES: [ Premium Material ] Drawing tool is made of high quality Aluminum and Stainless Steel, durable and not easy to rust, with good hardness, high strength, good corrosion resistance, easy to operate.[ Adjustable ] Diameter size can only be adjusted between 10mm and 77mm. Circle tool can be used to draw round measurements and so on. It can be adjusted, can be or small. Simply rotate the rings to open and captivating mechanism.[ Easy To Use ] The diameter turn to larger by rotating clockwise, smaller by roteting counterclockwise. This is an easy to carry plotter, precision gauge, and can be used in industry.[ ] Round circle template ruler tool is a great tool for students, carpentry. Can be used as a 360 metrics for students and school students. Also ideal for engraving, carpentry, sewing, sewing and hoist design.Circle drawing tool is a ruler that seamlessly creates a in seconds.With this meter, you dont have to worry about the circle being drawn. The drawing tool will not move during use to destroy the drawn pattern. It can be adjusted at any time during the use; flexible and convenient,and the circle drawing tool can be reused for many years.SPECIFICATIONSMeasuring Round Compass RulerProduct diameter: 12.5CMMaterial: stainless steelcolour: yellowPackage Contents:1 x circular drawing rulerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.