bids are invited for mechanical engineering lab equipment screw jack apparatus with weights , worm and worm wheel, wheel and differential axle 30 cm with weight, winch crab single purchase with weight , universal force table ( normal ) , moment of inertia of flywheel , parallel forces apparatus ( dial type 10 kg. balance ) , simply suported beam apparatus with weights, friction slide apparatus with weight, t hemispherical sectional models of screw thread, 2 bolts of four typ, 2 foundation bolts ( with nomenclatur, 2 screw jack apparatus with weigh, 2 bush bear, 2 plummer block or pedestal bear, 2 foot step bear, 2 flexible coupling