Compound Rod

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.

A model of two-stroke diesel engine made in aluminium alloy and gun metal.

Ignition is shown by means of a miniature bulb. Fuel supply is also sectioned. With hand crank, provided for manual operation. Mounted on base, with printed diagram showing working.