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Two cased monocular microscopes - an O Himmler Berlin laboratory micrsocope circa 1930 with spare slides, lenses and staining bottles, a Powell and Lealand students iron microscope with full set of lenses. both cases having keys, a Griffin and George P4 airflow meter (anemometer) in purpose built leather case with instructions. (3)
A 19th century brass Biram's Patent Anemometer, by Davis, Optician, Derby, 31cm wheel, 40cm wide, c. 1850John Davis announced in the Derby Mercury on February 12th 1845 that Biram’s patent anemometer would be ready in a few weeks. Davis Derby produced anemometers based on the Biram patented design from 1845 up to 1960.
Of mining interest; A yard stick once belonging to the Grimethorpe Colliery Manager Reuben Athey Roebuck with initial plate "R.A.R.", a John Davis Anemometer in case, used to determine the volume of air entering or exiting mine workings, a John Davis brass cased mining Hygrometer Dry Wet Thermometer, a miner's lamp with copper plate "R Roebuck".
Brass colliery anemometer by Davis & Son of London and Derby, No.6, patent No.13182, the silvered dial with Arabic numerals and subsidiary dial, 10.5cm diameter in a mahogany case Condition: Wear to the wooden case and interior felt, leather strap is broken, light rubbing to the surface of the meter, reset button appears to work correctly - **General condition consistent with age
PORTABLE ANEMOMETER TYPE INSTRUMENTno maker's name visible, copper body with brass measurement dial, vane positioned above dial, dial outer measurements in furlongs and inner measurements in miles, contained in fitted wooden box, miniature glass bottle for oil contained in fitted compartment within box, inscription in pencil under metal slate fitted to interior of box reads 'Belonged to Sir William Robertson Copland, bought by John Miller contractor on disbandment of the Copland establishment', 19cm long
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288 item(s)/page