This Helix Oxford Maths Set is ideal for school goer, students and learners of all ages. Containing 9 essential tools for studying maths subjects, all kept together in a handy, durable tin, this set is suitable for the study of geometry and more. Features: This set contains a compass, dividing compass, ruler, 45 degree set square, 60 degree set square, 180 degree protractor, eraser, pencil and sharpener. The ruler in this set measures 15 cm The units of measurement in this set include: degrees (angles), metric (centimetres and millimetres) as well as imperial (sixteenths and inches). This set comes packaged in a durable tin protective case. This set comes in a colourful orange design.