For showing the difference in conductivity.
Rod 300 x 18 mm half brass & half polished wood.
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The model demonstrates the principle operation. It is cut way to show the internal constructional details.
The power piston is an arch like triangular rotar which on rotating generates an epitrechoid. Mounted on base.
Represents internal structure and operating principles of an air-cooled two stroke engine All parts in aluminium alloy. Ignition is shown by means of a mainature bulb. Carburetter and fuel supply also sectioned. Mounted on base, with printed diagram showing working.
One cylinder, 4 cycled and double valve system gas engine, to show operations like intake, compression, explosion, exhaust, spark and others, mounted on wooden base with spark plug and battery.
For illustrating expansion by heating and contraction by cooling.
Comprising a mild steel bar 110 x 10 mm. length x diameter, on rod with wood handle, overall length approx. 280 mm. with metal cast gauge, sliding fit over ends of bar and with hole 10 mm. bore in one Arm.
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