This 30cm scale rolling rule features a roller and cut-out protractor, making is a highly useful and versatile tool. It can be used to draw accurate shapes and parallel lines by combining use of the roller with the various holes in and sides of the ruler. This ruler is made of hard-wearing clear acrylic, making it both durable and easy to line up with your work underneath. - Transparency: Transparent - Length: 30cm - Brand: Möbius und Ruppert - Rigidity: Rigid - Main material: Plastic (acrylic) - Measurement: Metric