bids are invited for design installation and maintenance of educational lab/centre - education centre; polytechnic lab equipment; buyer - ammeter (analog or digital) 0–5a, 0–10aac/dc , voltmeter (analog or digital) 0–300vac/dc , pn junction diode trainer kit ilt-in power supply and sockets, with ammeter and voltmeter , verification of ohms law , verification of kcl , verification of kvl , working model of synchro mesh gear box (4-wheeler) , propeller shaft assembly (with u joints and slip joint) , differential assembly model , determination of minor frictional losses in sudden expansion /sudden contraction in a pipe , v-block (material: cast iron, size: 75x50x50 mm) , feeler gauge (range: 0.05 mm to 1 mm) , radius gauge (range: 1 mm to 7 mm) , thread gauge (for metric and imperial threads) , go-no go gauges (custom-designed based on project requirements) , cnc lathe machine (with tool holders and controllers) , spot-welding machine. , metallurgical microscope , high pressure steam boiler cut section model , cutsection model of shel and tube type heat exchanger , mannequin for cpr , mannequins arm for iv set , bottle washing machine , plc trainer kit