The Four Stroke Petrol Engine Model is a detailed educational model designed to demonstrate the construction and working of an air-cooled, four-stroke spark ignition (petrol) engine. The model clearly illustrates the four stages of engine operation suction, compression, power, and exhaust along with the movement of the piston, connecting rod, crankshaft, spark plug, and valves. The operation and timing of the inlet and exhaust valves are clearly visible, helping students understand the complete engine cycle and the conversion of fuel energy into mechanical work.
It is mounted on a polished wooden base with a schematic diagram for easy reference. With an overall height of approximately 450 mm, it provides a clear and practical demonstration of internal combustion engine principles, making complex concepts easier to visualize and understand.

A functional glass model of steam turbine. Comprises a glass bulb 70 mm diameter approx, with side arms bent at right angles. With stand.