Set Of Thread Ring Go / No-Go Gauges For Lhb Coaches. One Set Of Go & No-Go Thread Gau Ge Should Have Following Item (Description & Qty) : 1) Size : M16X2.0 Mm-6G (One Thread Ring Gauge Go & No-Go Gauges) - 01 Pair. 2) Size : M20X2.5 Mm-6G (One Thread Ring Gauge Go & No-Go Gauges) - 01 Pair 3) Size : M8X1.25 Mm-6G (One Thread Ring Gauge Go & No-Go Gauges) - 01 Pair. Make/ Brand : Baker/ In Size/ Precision/ Mitutoyo/ Master Metrology Or Similar. Note :-Calibration Certificate From Nabl Acc Redited Lab To Be Supplied With The Gauges. Calibration Certificate Date Done By Supply Of Material Date [ Warranty Period: 30 Months After The Date Of Delivery ] ]