supply of ladder trolley complete set generally confirming to rdso specification no. tm / sm / 465 dated 03.02.2014 ( rev 01 of 2020 ) enclosed with following minor deviations. 1. each trolley set comprises of ( 1 ) wheel and axle 2 nos. ( 2 ) detachable frame- 1 no. and foldable ms ladder-1 no. 2. the wheel and axle set, frame for the trolley and the ladder for the trolley shall be as per the drawing enclosed. 3.the materials especially steel used for fabrication of wheel and axle should confirm to relevant standards wherever applicable. only isi marked, branded ms pipe should be used for fabrication of ladder. the finished ladder should be given one coat of anticorrosive painting 4.seating arrangements, any arrangement for tool box are not required in the trolley though mentioned in the rdso specification. 5. where there is any minor deviation in the dimensions between the drawing and the rdso specification is noticed if any, the dimensions in the enclosed drawing shall be adopted. 6. suitable insulating pad or similar insulating material should be provided in the axle such that the two wheels of the axle are not electrically shorted. 7.prototype approval for the finished trolley is not mandatory but preferred. 8. inspection will be carried out by consignee. encl: 1. rdso specification no.tm / sm / 465 dt.03.02.2014 ( rev 01 of 2020 ) 2. drawing no.m / trd / sk / 589 [ warranty period: 30 months after the date of delivery ] sse / ohe / arakkonam , sr tamil nadu 20.00 set