Plotting protractor (Struben's patent) made by Elliott Bros. engraved: "Elliott Bros

Made:: London

maker:: Elliott Brothers

Plotting protractor (Struben's patent) made by Elliott Bros. engraved: "Elliott Bros, London Struben's patent no.52" with case.

Details

Category:: Mathematics

Object Number:: 1948-234

type:: drawing instruments and semi-circular protractors

credit:: Institution of Civil Engineers

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