Rail Straight Edge Ruler Rail Straight Edge Ruler is used to check track rail from any deflections before and after welding. Benefits 1. The ruler body is made of high-quality carbon steel or stainless steel, and the scoring adopts laser scoring technology. 2. The cutting line is made of laser cutting process 3. The Straightness Measurer railway ruler is used to measure the railway rail flatness and wear. 4. Material: carbon steel Model LJ-PC-1000 Type Rail Straight Edge Material Carbon steel Dimensions (L x W x H) (mm) 1000*20*50mm Measuring range 0-1000mm Measuring surface accuracy 0.04 Weight 2.6kg