aser Alignment Device Laser Alignment Device is used for measuring track level and line to aid track measurement and hand tamping operations. It can measure the Horizontal and the Vertical . It is mainly composed of laser transmitting device,target positioning device and moving positioning target device . Specification Model: LJ-BXJG Type: Rail Laser Alignment Device Material: Alluminium Alloy Dimensions (L x W x H): 30*30*12mm Laser measure distance: 30m Laser center spot:﹤10mm (30m distance area) Vertical Point range: (-30~+60)mm Horizontal Point range: (-30~+60)mm Accuracy: 2mm Gross weight: 1.5KG Battery: 2000mAh (continuous using 5-6 hours)