This scale ruler is a flat metric scale ruler designed for students with precision graduated scales. It is made of Styrene and features 1:10, 1:100,1:5, 1:50, 1:20, 1:200, 1:500,1:1000 scales. With bevelled edges, you can ensure precise, clean lines and its 30cm size allows you to easily carry it with you in your pencil case while on the move. Made in New Zealand.