supply of manufacturing and supply of complete set of inspection gauges , manufacturing and supply of complete set of inspection gauges as per rdso drg no. t-621 3, alt-03 for for 6400 mm o.r. fan shaped switch (curved) b.g. (1673 mm) for 60 e1 rail on psc sleepers to drawing no. t-4966. the list of gauges as per rdso is enclosed as annexure-i. or latest. the gauge(s) sho uld be calibrated from approved agency and to be supplied with nabl calibration certificate. [ warranty period: 30 months after the date of delivery ] ] , manufacturing and supply of complete set of inspection gauges as per rdso drg no. t- 900 2, alt-2 for 6400 mm curved switch with 60e1a1 thick web tongue rails for 1 in 8.5 turnout b.g.(1673mm) f or 60e1 rail on psc sleepers to drg.no. t-6280. the list of gauges as per rdso is enclosed as annexure- ii. or latest. the gauge(s) should be calibrated from approved agency and to be supplied with nabl calibra tion certificate. [ warranty period: 30 months after the date of delivery ] ]