supply ,installation, and demonstration of machines, materials and equipments for mechanical engineering lab in the premises ofgovernment polytechnic lakhisarai--1 impact testing machine (izod test) 2 thermometer and pressure gauges of different types 3 heat pump 4 steam turbine steam turbine test rig 5 condenser working models of jet condenser, surface condenser 6 steam engine 7 heat engine 8 separating and throttling calorimeter 9 heat exchanger 10 experimental setup for the measurement of thermal conductivity of thick slab and composite wall 11 milling machine automatic for multi-purpose 12 brazing and soldering kit with gas cylinder and accessories trolley brazing and soldering kit with gas cylinder and accessories trolley