bids are invited for cut section model of actual single cylinder four stroke petrol engine for plotting valve timing diagram , cut section model of actual multi cylinders four stroke petrol engine for plotting valve timing diagram , cut section model of actual single cylinder four stroke diesel engine for plotting valve timing diagram , cut section model of actual multi cylinder four stroke diesel engine for plotting valve timing diagram , cut section model of actual single cylinders two stroke petrol engine for plotting port timing diagram , steam power plant working model , car air conditioning actual cut section model , model of gas turbine , air compressor , air compressor dual stage , experiment with a radial compressor , gear pump test rig variable speed , steam quality using calorimeter , joule thomson coefficient total quantity : 14