General description Our drawing ruler tool is a versatile and innovative instrument that functions as a straight and curved metal ruler, a compass, and a protractor. It is an essential tool for artists, architects, and students, allowing for the creation of precise lines, arcs, and circles, as well as measuring drawings and designing mandala patterns. Technical specifications Material: Black iron Includes: Ruler with straight perforations, abstract ruler with curved contours, built-in wire drawing rails, a set of wrenches, and a bottle opener Usage Draw perfect circles and patterns effortlessly Measure drawings accurately Create mandala patterns Other information Compact and portable design for easy transport