Railway Work And Maintenance of Way Track Level And Line Measuring Tools Portable Laser 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 . Railway Work and Maintenance of Way Track Level and Line Measuring Tools Portable Laser Alignment DeviceRailway Work and Maintenance of Way Track Level and Line Measuring Tools Portable Laser Alignment Device Product Parameters Model LJ-BXJG Type Rail Laser Alignment Device Material Alluminium Alloy Dimensions (L x W x H) (mm) 30*30*12mm Laser measure distance 30m Laser center spot