Digital Tread Thickness Gauge (J Gauge) For Bg Loco Least Count 0.01 Mm, Accuracy Of Measurement +/- 0.02 Mm With Nabl Approved Lab Calibration Certificate. Make: J Yoti, Pie And Ganpati Enterprises. Warranty Period Upto 12 Months From The Date Of Delivery [ Warranty Period: 12 Months After The Date Of Delivery ] ]