tender for slotted bar with nut for actuating rod of pantograph . specn/ drg no.: asper rdso specn no.-rdso/2008/el/spec/0066 rev. 0, dt. 20.06.2008 and amendment no. - 1 dt.31.12.2008. [as per m/s gsec drg no.gsec/panto/032 m/s contransys pt.no.- c 01750 and crepl ptno.010 2133.] .