supply of gauge columngauge column, supply of set of items gauge column cock for x-class locomotives to the following drawings. ( 1 ) gauge column cock ( top ) rh as per drg no.bm / 1413 & 1413 a / m alt ( 1 ) , qty-1 no / set ( 2 ) gauge column cock ( top ) lh as per drg no.bm / 1413 & 1413 a / m alt ( 1 ) , qty-1 no / set ( 3 ) gauge column cock ( bottom ) rh as per drg no. bm / 1402 & 1402 a / m alt ( 1 ) , qty-1 no / set ( 4 ) gauge column cock ( bottom ) lh as per drg no. bm / 1402 & 1402 a / m alt ( 1 ) , qty-1 no / set. items ( 1 ) to ( 4 ) consists of 01 set. note: 1 ) all threads should be as per bsw standards. 2 ) each item should have one integral test piece and is to be parted in presence of railway inspection authority and handed over for inspection before machining. [ warranty period: 30 months after the date of delivery ] => limited