corrigendum : supply of mechanical track jack simplex lever operation type , mechanical track jack simplex lever operation type, double acting 15 ton capacity with opera ting ratchet type with operating lever should be double acting trip low ring with following spe-1 foot lift 70 mm, cap 15 ton ,on toe 7-5, on head 15 ton, closed height min 558 mm, base size 280x160mm, head size 75x75 mm, pitch-15 mm,toe size 50 mm, weight approx-32 to 35 kg. jack should be of cast steel body, soc ket lever with alloy steel, heat treated poule forge steel necks with raised teeth, heat treated fulcrum pin e asy & compact for convenient handling & transporting. make: sree rama enterprises-guntur or similar [ warranty period: 30 months after the date of delivery ] ]