BENEFITS 1. Smart and Portable The size of the horizontal rod is about 300mm, and the vertical rod is about 250mm. The ruler body is smart and portable. 2. LCD Digital display, easy to read. 3. High Accuracy The measurement accuracy can reaches 0.01mm.The measurement results can be display instantly 4. Multifuncional, Wide range of application . It can measure five items to meet different requirements: 1) The descent height value of the switch rail 2) The descent height value of the point rail 3) The height of check rail 4) The height of switch roller 5. This device is equipped with a simple calibrator ,could be used for quick calibration before each use 6. The measure head could be moved from side to side,suitable for all kinds distance tracks. Measure head could move range is 60mm,could be used for measuring different distance switch rail and point rail. 7. Replaceable measuring probe, suitable for different usage When measuring the height of the switch rail and point rail relative running rail, using the flat measuring probe; When measuring the rail surface dent, using the sharp measuring probe. 8. Metric /Imperial unit Specification Model LJ-JGJD-I Type Switch Rail Gauge Material Stainless Steel Dimensions (L x W x H) (mm) 270*22*180mm Measure range -5~30mm Accuracy 0.05mm Resolution 0.01mm Working humidity 93%RH Size 270*22*180mm Weight 0.45kg Power Button battery(1.5V)