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A Browning Microspectroscope,
A Browning Microscope Microspectroscope, lacquered brass, signed 'John Browning, London.', eyepiece diameter 31.5mm
A Browning Direct Vision Spectroscope, lacquered brass, signed 'John Browning, London.', in domed leather case
A Browning Direct Vision Spectroscope, lacquered brass, signed 'John Browning, London.', in leather covered case
Two Browning Direct Vision Spectroscopes, both lacquered brass, one signed 'John Browning, London.', uncased, with the other signed 'John Browning...
Thorp's Direct Vision Diffraction Reading Spectroscope, by R and J Beck, lacquered brass, signed 'Thorp's D. V. Diffraction Reading Spectroscope, ...
A Beck Direct Vision Spectroscope, lacquered brass, signed 'D. V. Spectroscope PAT. APP. For. R & J Beck Ltd, London.', in fitted case
A Hilger Direct Vision Spectroscope, lacquered brass, signed 'A Hilger, London.',in fitted case
A Hilger Direct Vision Spectroscope, lacquered brass, signed 'A Hilger, 192 Tottenham Court Road, London.', in domed leather covered case
A Hilger Direct Vision Spectroscope, on alt-azimuth stand, lacquered brass, signed 'A Hilger, London.', in fitted wooden case
A Large & Important Biot's Polariscope By Lerebours a Paris, standing on a large (9 inches diameter) base, with a tall column supporting body of i...
A Fountain in Vacuo,
A Fountain in Vacuo, physics demonstration apparatus, in glass and lacquered brass, 19th century, 680mm high
A Large Philips X-Ray Tube,
A Large Philips X-Ray Tube, tube acid etched 'Philips X-Rays Ltd W.C.1' and mounted on a wooden stand, with ceramic insulators , tube 52cm
A Large Induction Coil,
A Large Induction Coil, by Apps, coil covered in blue velvet, supported on ebonite uprights, mahogany base with switch and terminals, label readin...
A Galvanometer,
A Galvanometer, by Siemens Bros. & Co., glazed lacquered brass frame mounted on mahogany base, with three leveling screws, scale divided to one de...
A Large Cold Cathode X-Ray Tube,
A Large Cold Cathode X-Ray Tube, heavy anode gas discharge tube, bearing label 'Very Good Tube', on wooden display stand, tube 57cm
A Large George Adams Senior Static Barrel Machine, hand blown glass barrel mounted on 2 mahogany uprights, turned by a mahogany crank handle, with...
A Large Static Barrel Machine,
A Large Static Barrel Machine, hand blown glass barrel mounted on 2 mahogany uprights, turned by a mahogany crank on a wheel connected via a band ...
A Bohnberger's Sphere (Gyroscope), brass, the ball with string roller to one pivot, 165mm high, mid 19th century
A Twin or Double Gyroscope,
A Twin or Double Gyroscope, by Newton & Co, rare fully adjustable demonstration gyroscope in lacquered brass and ebonised brass, signed 'Newton & ...
A Molecular Model of Crystal Structure, by Crystal Structures Ltd, components in plastic coated wire, with plastic atoms in four colours, with lab...
A Pantograph,
A Pantograph, by Benjamin Martin, circa 1780, lacquered brass with cloth-covered lead weight, one arm engraved 'Made and Improved by 'B. Martin Fl...
A 3 Tier Case of Drawing Instruments, by Elliott Brothers, many instruments stamped 'Elliott', with the rolling ruler engraved 'Elliot Bros, 449 S...
A Surveyor's Level & Compass,
A Surveyor's Level & Compass, by Chadburn Brothers, telescope with 2 eyepieces and sunshade and compass with magnifier, with graduated bubble with...
A C&E Layton's Improved Arithmometer, a development of Samuel Tates design of the calculating machine invented by Thomas de Colmar, patents for 19...
A Fine & Complex Ebony & Brass Pantograph, by Adrien Gavard of Paris, with shaped black lacquered weight and two additional arms, circa 1860, in w...
An Early Pocket Set of Brass Drawing Instruments, by William Parson(s) of London, sector with 4.5 inch arms and 4.5 inch protractor, with wheat-ea...
An English Compass Sundial Calendar Compendium, in the form of a complex perpetual calendar box, with two volvelles and revolving world times indi...
A Pocket Sundial,
A Pocket Sundial, by Watkins and Hill, including sundial, with floating card compass, in velvet lined red morocco case09/09/2017 Condition Report:...
Six 18th Century Calendar Medals, by John Powell, with Julian calendar example, 1748, and Gregorian calendars for 1756, 1774, 1787, 1793 & 1797, ...
A French Perpetual Calendar,
A French Perpetual Calendar, finely drawn and illustrated in pen & ink, in rosewood frame, calendar covering 144 years from 1832
A Ship's Bulkhead Clock,
A Ship's Bulkhead Clock, by Mercer, brass cased, white dial inscribed 'Observator Rotterdam, Mercer St Albans England', mounted on mahogany back-b...
A Boxwood 15 Minute Sand Glass
A Boxwood 15 Minute Sand Glass, turned box wood top and base
A 17th Century Ivory Nuremburg Diptych Pocket Sundial, by Melchior Karner, Leaf 1a - With compass viewing aperture and 32 point wind rose around...
A 17th Century Ivory Magnetic Azimuth Pocket Sundial, by Charles Bloud, circa 1670, Leaf 1a – Equinoctial dial numbered 1-12, 1-12 divided to 30 ...
A Fine & Massive Edmund Wheeler ‘Stand A’ Compound Binocular Microscope, English, circa 1870, microscope height 58cm, combined weight 25kg, Signed...
A Large Binocular Compound Microscope, by N.W. Dunscombe of Bristol, English, circa 1875, microscope height 49cm, signed 'N W DUNSCOMBE' to rear ...
A Leitz Polarising Model KM Microscope, serial no. 333606, petrological model on larger post-war stand, with rotating graduated stage, Bertrand le...
A Watson Edinburgh H Microscope,
A Watson Edinburgh H Microscope, serial no. 14616, with Watson x 5 high-hat eyepiece and converter to 19mm eyepiece, Watson 1 inch and 1/8 inch ob...
A Watson Edinburgh H Microscope,
A Watson Edinburgh H Microscope, serial no. 14611, with Watson x 6 and x15 19mm eyepieces, Watson 2/3 inch and 1/6 inch Panchromatic and 1/12 inc...
A Leitz 'Tripod' or 'English Stand' Microscope signed 'Ernst Leitz Wetzlar No201941', lacquered brass body tilting on trunnions with friction lock...
A Microscope Oil Lamp,
A Microscope Oil Lamp, by C. Baker, London, brass lacquered circular foot with square sectioned column supporting the lamp, circular oil reservoir...
A Microscope Oil Lamp,
A Microscope Oil Lamp, by Watson & Sons London, brass lacquered circular foot with square sectioned column supporting the lamp, circular glass oil...
A Davon Micro-Telescope Outfit,
A Davon Micro-Telescope Outfit, lacquered black oxidized brass with stitched pig skin, with folding tripod and lenses to be set up as a telescope ...
A Carl Zeiss IIa Microscope Outfit, signed to body tube 'Carl Zeiss Jenna, No.26315', lacquered brass body tilting on trunnions at top of a black ...
A Dissecting Projection & Drawing Microscope, by Watson & Sons, signed to foot 'Watson & Sons Ltd, London Universal', microscope supported by blac...
The 'Educational Microscope',
The 'Educational Microscope', by Smith, Beck & Beck, signed 'SMITH & BECK, LONDON', serial no. 1999, on French polished wooden base board with acc...
An E. Leitz Microscope,
An E. Leitz Microscope, signed 'E. Leitz Wetzlar No.157386', supported on a horseshoe shaped stand with a pillar of stage, plano-concave mirror be...
An Unsigned French Brass Compound Microscope, supported on a solid brass shield shaped base, turned column to rear terminating in a compass type j...
A Carl Zeiss Jenna Brass Compound Microscope, VII stand signed 'Carl Zeiss Jenna 11935', supported on a horseshoe shaped base with brass column su...
A Compound Brass Polarising Microscope, by Swift & Son, London, signed 'Swift & Son, 81 Tottenham Ct Rd, London W.C.', stand terminating in trunni...
A Microscope Goniometer Eyepiece & Substage Polariser, signed 'E. Leitz, Wetzlar', eyepiece goniometer with engraved scale in degrees, substage po...
A Simple Dissecting Microscope, by Baker, London by Baker, London, signed 'C. Baker, 244 High Holborn, London', supported on horseshoe shaped base...
An E. Leitz Microscope,
An E. Leitz Microscope, signed 'Ernst Leitz Wetzlar', supported on horseshoe shaped foot with brass column supporting microscope on compass type j...
A Simon Plossl Microscope,
A Simon Plossl Microscope, circa 1854, Vienna, signed on the tube 'Plössl in Wien', finished in lacquered brass with blued steel screws, on a heav...
Two Small 18th Century Reflecting Telescopes, unsigned, both in lacquered brass with speculum primary & secondary mirrors, each with screw focus t...
An 18th Century Monocular / Opera Glass, by Dollond, black-stained ivory and tortoiseshell, with silver bands, single draw, in silvered brass, sig...
An Adams's New Patent Portable Telescope, six drawer in Sheffield Plate (fused plate), bound in green ray skin, with lens cap, 36.4cm extended, en...
A Library Telescope with Dr Kitchiner's Pancratic Eye Tube, with a Copy of Kitchiner's The Economy of The Eye, telescope attributed to Dollond, s...
An Important Foucault-Secretan Reflecting Telescope, by Secretan a Paris, circa 1858, signed to the front end cover ‘Secretan a Paris’ and engrave...
A Unis Table-Top Stereoscope,
A Unis Table-Top Stereoscope, in amboyna, magazine to take 50 stereo views (130mm x 60 mm), and can be used with glass views or with the aid of th...
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