supply of one set of gaugesone set of gauges,one set of gauges required for checking e-type cbc consisting of 3-items:- (1) contour wo rm limit gauges no.1 as per rdso g-76 manual appendix -3a (2) contour worm limit gauges no.2 as per rdso g-76 manual appendix -3b (3) knuckle stretch and hose wear gauge no.3 as per rdso g -76 manual appendix -3c. hardness of material 40/45 hrc minimum. oem/oem authorization certificate to attached . c alibration certificate traceable to national standard /npl/nabl to attached. to be procured from past prov en sources of same item in ir. [ warranty period: 30 months after the date of delivery ] ]