rule; slide

W F Brown
Wood and plastic slide rule with a brown and white scale and a yellow slider. Used by clerk, at Mungal Foundry until its closure, then at the Carron Iron Works. A slide rule for rapidly calculating the weight and cost, at various rates, of rectangular metal plates, angle bars, circular or elliptical discs, metal tubes, round bars and square bars, in the following metals; cast iron; wrought iron, steel, sheet brass, cast brass, gun metal, muntz metal, white metal, zinc, lead, aluminium. Instruction book enclosed. It was used at the foundry to estimating the weight of castings. .
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Dimensions:0 - Whole:L 43.1cm (L 1' 4 15/16")
Dimensions:0 - Whole:W 7.6cm (W 3")
Dimensions:0 - Whole:H 1.8cm (H 11/16")
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