DFRobot DWG0014-M PCB Engineering Ruler is a short PCB ruler small in size that makes it more delicate, compact, and easy to carry. This ruler is 6.3″ length of size and provides references for electronic engineers when designing PCBs and improve work efficiency. The DWG0014-M ruler has a precise scale and is made up of hard glass fiber material. This engineering ruler is a good helper for ruler drawing and model making.