Material: stainless steel + alloy steel + magnetPacking size: 11.5*10*2.5CMFeatures:This is not only a stationery tool, it can also be used as a pen holder, compass, wrench, scale, bottle opener and drawing guide.Contains two practical modules, a straight-line perforated ruler, and an abstract ruler with a curved outline. These modules can be used independently like your scale or curve ruler, but when you use them together, things will becomes more interesting.There are two very clear observation methods. It can be used as a drawing tool or as an EDC tool.It is the best friend of artists, engineers, designers, architects, students and ordinary humans.Many things can be done. It allows you to make perfect lines, arcs, circles, measure drawings, make mandala patterns, and even let you put a pen/pencil in it when you are resting.Packing list:2*Module1*Straightedge1*Abstract rulerPacking list Packing list: 2*Module 1*Straightedge 1*Abstract ruler