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Lot 398
A collection of surveying and meteorological instruments, late 19th and early 20th century,including a double parallel ruler, a Smeeth's Transit Protractor by Negretti & Zambra, a Hanriot folding pair of binoculars in case, an anemometer in metal case, a Fred G. King Pocket Reconnaissance Instrument Patented July 7th 1902 by J.C.Sala Maker San Francisco, a J.H.Steward Patent Telemeter in case, a Trouhgton & Simms box sextant in case, a Richard Freres pocket barograph in case, and various barometers and compasses, (qty)
Lot 411
WINDVANE ANEMOMETER WEATHERVANE , mid-20th century, a nautical windvane in the form of an aeroplane fuselage, of aluminium and bronze construction with lightweight body and tailplane and having a four-bladed airscrew propeller on a 360 degree swivel to vertical post mount, polished metal surfaces, inscribed maker’s plate to base, used as weathervane, 91cm high
Lot 184
Negretti and Zambra anemometer with brass and black Japanned finish in fitted caseSeems to work as it should, blades revolve freely, needles move and set to zero by rotation of head. The screw-off handle has some crazing to the lacquer and appears to have been re-touched in places. Case is good.
Lot 39
A rare portable aneroid altimeter calibration pressure chamber, R. W. Munro limited, for use by the Air Ministry, London/Harlow circa 1940 The cylindrical brass vessel with screw-clamp end cover secured by turning a large four-spoke wheel, three raised circular glazed viewing apertures flanking internal lamp connection terminals to front and hand pressure pump beneath pipework and valve taps to right hand side, mounted via cast cradle supports onto a rectangular mahogany base applied with brass trade plate engraved REF. 6c/63, PORTABLE CALIBRATOR MK 1, FOR ALTIMETER, R. W. MUNRO LTD, SERIAL No. 263/40, with original conforming box cover applied with repeat trade plate and aluminium plate stamped AM 66 over R & S D and secured via knurled brass screws, (pipework incomplete and lacking pressure gauge), 51cm (20ins) wide. The firm R.W. Munro Limited can trace its origins back to 1783 when James Munro was apprenticed to a mathematical instrument maker in Wapping. His son, also called James, carried on the business, as did two of the younger James' sons. The partnership between the brothers was amicably dissolved in 1864 when Robert W. Munro set up on his own account as an instrument manufacturer, and thereby founded the present company. The firm quickly gained a considerable reputation in the fields of mathematical, optical, meteorological and banking equipment, fields in which it is still prominent. Munro provided instruments for the Scott and Shackleton Antarctic expeditions and, in the 20th century supplied components for the construction of H.P. Babbage's 'Mill', a connection which was renewed in 1956 when the company was commissioned by I.B.M. to construct a copy of the original. R.W. Munro and Co. is perhaps however best known for the development of the Dines anemometer (a design which has remained basically unchanged to the present day) - the demand for which came about in response to the Tay Bridge Disaster in 1879. The company was also involved at an early stage in the production of hydrological and experimental tank equipment, and was a pioneer in the field of aeronautical instruments. The current lot would have almost certainly been supplied to the Air Ministry to facilitate the calibration of aircraft altimeters during WWII.
Lot 604
Mining interest - A Birams mining anemometer by John Davis and Son Derby cased, a 19th Century mahogany cased brass compass by R Field & Son Birmingham, a similar compass, three cased sets of drawing instruments, a leather wallet containing rulers and maps, brass protractor and a quantity of large scale maps of Capponfield colliery, Moseley Hole etc (qty)
Lot 642
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)
Lot 3446
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.
Lot 50
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".
Lot 383
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
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320 item(s)/page