laser scale, easy to read. Find the hole corresponding to the scale, insert the pen into the hole, and draw the desired line. Accurate Precise marker rules can help you draw perfect horizontal lines while sliding rules along the working edge. Made of aluminum alloy material, anodic oxidation treatment, wear-resistant, rust-proof and . L-shaped square can draw lines on both sides. The minimum center distance of each hole is 1mm Tips:The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Colour:Red Material:Aluminum alloy Package Contents: 1 * Precision Scale Ruler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.