supply of 1)broad gauge wheel tyre defect gauge similar to model -tdg-1 of pie, as per indian railway standard made of 4 to 3 m thick stainless steel plate with laser etching permanent marking. firm should provide calibration certificate from nabl certfied firm. (wagon) 2)tyre defect gauges for bg coaches of size 22mm as per rdso specification plate 38, rule no. 2.8.4 of irca, made of 4mm thick hard alloy steel plate. note (1) gauge made by tool (steel hardness) to be 45/55 hrc, (2)calibration certificate to be supplied along with material for every gauges separately, (3)material to be supplied in individual wooden storing box with handle for carrying. (coach)1)broad gauge wheel tyre defect gauge similar to model -tdg-1 of pie, as per indian railway standard made of 4 to 3 m thick stainless steel plate with laser etching permanent marking. firm should provide calibration certificate from nabl certfied firm. (wagon) 2)tyre defect gauges for bg coaches of size 22mm as per rdso specification plate 38, rule no. 2.8.4 of irca, made of 4mm thick hard alloy steel plate. note (1) gauge made by tool (steel hardness) to be 45/55 hrc, (2)calibration certificate to be supplied along with material for every gauges separately, (3)material to be supplied in individual wooden storing box with handle for carrying. (coach),broad gauge wheel tyre defect gauge similar to model -tdg-1 of pie, as per indian railway st andard made of 4 to 3 m thick stainless steel plate with laser etching permanent marking. firm should pro vide calibration certificate from nabl certfied firm. (wagon) [ warranty period: 30 months after the date of delivery ] ] , tyre defect gauges for bg coaches of size 22mm as per rdso specification plate 38, rule no. 2.8.4 of irca, made of 4mm thick hard alloy steel plate. note (1) gauge made by tool (steel hardness) to b e 45/55 hrc, (2)calibration certificate to be supplied along with material for every gauges separately, (3)m aterial to be supplied in individual woode