supply of set of go and no-go thread plug gauges for lhb coaches , set of go and no-go thread plug gauges for lhb coaches, suitable for inspection of iso me tric internal threads. one set shall consist of the following: (a) thread plug gauge go & no-go, size: m20 x 2.5 mm pitch - qty: 1 set (b) thread plug gauge go & no-go, size: m16 x 2.0 mm pitch - qty: 1 set (c) thr ead plug gauge go & no-go, size: m8 x 1.25 mm pitch - qty: 1 set. the gauges shall be manufactured fro m hardened and stabilised alloy tool steel and generally conform to relevant iso/is standards for metric thr ead gauges. each gauge shall be permanently marked with size and identification details and supplied com plete with a valid calibration certificate traceable to an nabl-accredited or government-approved laborator y. accepted makes: baker / master metrology or equivalent reputed oem. [ warranty period: 30 months a fter the date of delivery ] ]