Digital Rail Frog Wear Gauge Digital Rail Frog Wear Gauge is used to measure vertical wear value of frog point rail and wing rail at any sectionsAlso could be used for measuring decrease value of point rail relative to wing rail Specification Model LJZCMA Type Digital Rail Frog Wear Gauge Material Stainless Steel Dimensions L x W x H 38016625mm Measure range 040mm Score value 001mm Indication error 0 15mm Working tempareture 1040 Main ruler measure range 0380mm