supply of pressure gauge , one set shall consist of the following in respective quantities. 1. pressure gauge (100 mm) for brake pipe of air brake system of freight stock to rdso drg no. sk73553 alt-.5 and to specification appendix-h of 02-abr-02. amendt. no 4 of sep.2016.- 1 no. 2. pressure gauge (100 mm) for feed pipe of air brake system of freight stock to rdso drg no. wd-83062/s- 05. alt-3. specification appendix- h of 02-abr-02. amendt. no 4 of sep.2016. - 1 no. note: 1 )all the gauges to be provided with calibration certificate from the oem which has traceability to nabl. the gauges to be calibrated against nabl certified ma ster gauges. 2) item is to be procured only from rdso approved/ developmental vendors for pressure gauge for air brake system. [ warranty period: 12 m onths after the date of delivery ] ]