Digital Rail Frog Wear Gauge For Railway Turnout Measurement Rail frog wear gauge is used for special measuring tools of railway maintenance department for frog and wing rail wear value. Specification Model LJ-ZC-A Type Digital Rail Frog Wear Gauge Material Stainless Steel Wing rail vertical wear -10~15mm Frog point rail vertical wear -10~15mm Accuracy 0.01mm Indication error ± 0. 01 mm
