Antique & Scientific Instruments U.K.






    Description: ddba2

An early, all brass, Biramís Patent Anemometer by Davis Derby. John Davis had works in Derby from1830 until 1873 when he died and his son Henry took over the compay as Davis & Son, Derby. The 1 Ĺ inch diameter silvered dial has two subsiduary dials, the upper reading 1 to X (10), each being 10 revolutions of the vanes and the lower reading 1 to C (100). Davis Derby and Biramís 143 Patent is also engraved on the dial. The 6 inch diameter impeller has 12 blades and a hinged handle at the top. The instrument is in very good condition both mechanically and cosmetically. - £225







The World's Minerals (with 40 colored plates) by L.J.Spencer - £15 






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last updated 19/4/15