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细节
A Pilot Balloon Slide Rule,
Mark I, 613/35, by J.J. Hicks, London, with Cosine, Sine, Time and Tangent scales, on celluloid and mahogany base with two brass cursors -- 24¾in. (63cm.) long, in fitted case; and a Brown's Slide Rule for Engineers, with printed card slides scaled for Horse Power, Propeller Pitch, Speed sof Ship, Coal Consumption etc., on mahogany base -- 16./12in. (42cm.) wide (2)
Mark I, 613/35, by J.J. Hicks, London, with Cosine, Sine, Time and Tangent scales, on celluloid and mahogany base with two brass cursors -- 24¾in. (63cm.) long, in fitted case; and a Brown's Slide Rule for Engineers, with printed card slides scaled for Horse Power, Propeller Pitch, Speed sof Ship, Coal Consumption etc., on mahogany base -- 16./12in. (42cm.) wide (2)
注意事项
No VAT will be charged on the hammer price, but VAT at 17.5% will be added to the buyer's premium which is invoiced on a VAT inclusive basis
拍场告示
The Brown's rule has been withdrawn from this Lot.