supply of set of thread ring go / no-go gaugesset of thread ring go / no-go gauges,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 ] ]