... comforms EN71&ASTM standards 4.Different scale range 12"triangle scale ruler,triangle plastic ruler,scale ruler1.Material:plastic 2.Size:12 ... inches/6inches 3.scale range: 1:1000, 1:2000, 1:3000, 1: ... 6000other different graduation available 4.OEM is welcomed, factory exsit model in triangle shape, and plastic material 5.More using, ... /ctn,G.W:14.6kg PIC for different model