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| (a) Comprises bars of Aluminium, Copper, Iron and Brass
each 125 x 13 x 3 mm length x width x thickness. Each with a
hollow cup for wax, screwed to the wooden ring of 150 x 90
x 10 mm outer diameter x inner diameter x thickness.
(b) Comprises bars of Aluminium, Copper, Iron and Brass
each 90 x 20 x 0.7 mm length x width x thickness. Each with
a hollow cup for wax, screwed to the wooden ring of 130 x 80
x 10 mm outer diameter x inner diameter x thickness.
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