LJ-HGM Sliding Rail Wear Measuring Gauge Sliding rail wear measuring gauge is used to measure the rail profile vertical wear and side cut value and switch rail desent value. It is Digital display reading, The reasonable design makes it light ,easy to operate and intuitive in reading. Model: LJ-HGM Type: Rail Wear Gauge Material: Stainless Steel Vertical wear:0-15mm Lateral wear:0-15mm Score value:0.01mm Indication error: ± 0.15mm