For showing the difference in conductivity.
Rod 300 x 18 mm half brass & half polished wood.
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One piece spinning with parallel sides & rolled rim.. Size: 75 x 50 mm 100 x 75 mm
A model of four stroke water – cooled diesel engine .. This is of the chain-driven overhead camshaft type and all functional components like camshaft, rock – arms,. tappets etc. are clearly demonstrated. The functioning of fuel injection system is also represented. Ignition is shown by means of a miniature bulb. Mounted on base.
Heavy cast iron base with 4 uprights, on one end of which is fitted a hand nut, the other drilled with holes to carry a cast iron rod bearing against narrow flats with 12 cast iron breaking rods to show force of contraction or expansion
GRAVESANDE – Ring and Ball with Chain. An apparatus for demonstrating thermal expansion, comprising a captive brass ball secured to a mounted brass ring by a chin, Ring mounted on rod with a wooden handle. The ball passes through the ring when cold but will not pass through after being heated
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