supply of inspection gauge of drg no. t- 10113, inspection gauge of drg t- 8989, inspection gauge of drg t- 8990, inspection gauge of drg no. t-8423inspection gauge of drg no. t- 10113, inspection gauge of drg t- 8989, inspection gauge of drg t- 8990, inspection gauge of drg no. t-8423,inspection gauge of drg t- 8989 for measuring insulating liner (gfn/hvn) rdso drg no. t- 87 51 to 8753. [ warranty period: 30 months after the date of delivery ] ] , inspection gauge of drg t- 8990, for measuring metal liner rdso drg.no t-8748. [ warranty period: 30 months after the date of delivery ] ] , inspection gauge of drg no. t- 10113, for fish plate (uic 60/60e1) rdso drg no. t-5916 [ w arranty period: 30 months after the date of delivery ] ] , inspection gauge of drg no. t-8423, for erc j clip rdso t-8258 [ warranty period: 30 mont hs after the date of delivery ] ]