supply of manufacturing and supply of complete set of inspection gauges as per rdso drg. no. t-6213manufacturing and supply of complete set of inspection gauges as per rdso drg. no. t-6213,manufacturing and supply of complete set of inspection gauges as per rdso drg. no. t-621 3 (part) for 6400 mm over riding fan shaped curved switch b.g for 60e1 rail on psc sleeper to rdso drg. no. rt-4966 for use in depot along with testing and calibration by any government approved lab or by any nabl accredited labs and confirming to specification, material: 3 mm thick tool steel plate of grade tc-3 ( table-1) of is:1570 (part-6) or equivalent of higher hardness. the gauges are to be supplied in in a woode n case. one set consist of (i) gauge no. 1/a- end