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Heliostat, contrived by the late G. Johnstone Stoney

1895

Drawing prism for use with microscope

1887

Early x-ray tube by W. Watson & Sons

1896-1904

Fluorescent screen by W. Watson & Sons

1896-1904

Stage micrometer by W. Watson and Sons Ltd.

1871-1900

Hammer break interrupter

Wenham binocular microscope with Crossley's illumination tailpiece

1875-1900

Simple dissecting microscope by Watson

1867-1882

Binocular microscope no.1925 (the 'Draper')

1875-1890

Oil lamp for microscopy

1885-1900

Kima model microscope and accessories by W. Watson and Sons Ltd.

1937

Spectrometer, fitted with replica of Rowlands grating

1905-1907

Compound monocular microscope

1890-1908

Watson Penetrator Tube

1906-1916

Microscope, made by Watson

1850-1900

"Service" Model microscope no.27178 by W. Watson and Sons Ltd.

1920-1930

Watson Holos paraboloid system, c. 1930

1921-1950

Stage, pillar and inclining prism

1871-1900

Polarizing microscope by W. Watson and Sons

1882-1908

Linear brush electrode

The Watson Steroscopic Binocular Camera

1900

Watson and Sons, Right Angle Prism

Watson's Sportsman Detective Camera, Monocular Form

1908

Watson Tourist' folding bellows tailboard field or stand camera for megatives 4 3/4 x 6 1/2

1885

Watson & Sons Folding Bellows Tailboard Field and Stand Camera, c 1890

1885-1895

Four glass electrodes, supplied by W. Watson and Sons, English, 1903

Four glass electrodes

Electrode holder with glass handle, English, 1903

Electrode holder with glass handle, English, 1903

1903

Glass X-ray tube, supplied by W. Watson and Sons

Glass X-ray tube

Watson cabinet stereoscope viewer for 107x44mm stereographs. Manufactured by

Watson Cabinet Stereoscope Viewer

Wimshurst machine, in cabinet, badly broken, by Watson and Sons, 313 High Holborn, London, England, 1901-1908.

Wimshurst machine

1901-1908

Clear glass bottle with wooden stopper containing pale gold lisge. Printed paper label reads: "Watson & Sons' micro-chemical preparations. Pale Gold Lisge. W. Watson & Sons, Ltd. Opticians, 313 High Holborn, London."

Clear glass bottle with wooden stopper containing pale gold lisge

Spinthariscope, in cardboard fitted case, marked "Spinthariscope, W. Crookes 1903. W. Watson & Sons, 313 High Holborn, W.C.".

Spinthariscope, in cardboard fitted case

1903

Hiloscope anamorphic lens with matching viewfinder and original instruction sheet manufactured by W Watson and Sons. Part of the Widescreen Association Collection.

Hiloscope anamorphic lens

W. Watson & Sons advert for Russell-Reynolds Adjustable Electrode X-ray Tube, signed by Russell J Reynolds, 1900

W. Watson & Sons advert for Russell-Reynolds Adjustable Electrode X-ray Tube

1900

Watson camera shutter, Type B, No.49 by W. Watson & Sons, 313 High Holborn, c. 1880.

Watson Camera Shutter, Type B

1880

Micro-photographic camera accessories:- 2 aplanatic bull's eye condensers, each on stand with centring screws, 2 dark slides, oil lamp

Micro-photographic camera accessories

Stereo-plotter designed by F.V. Thompson, made by W. Watson and Sons, 1908

Stereo-plotter designed by F.V. Thompson, with box

1908

'Bactil' research microscope, steel and brass, with some accessories, in mahogany case, by W. Watson and Sons Ltd., 313 High Holborn, London, England, 1948.

'Bactil' research microscope

1948

Stereoscopic microscope serial no 115397 by W. Watson and Sons Ltd of London, in case, 1951 to 1960

Stereoscopic microscope serial no 115397 by W. Watson and Sons Ltd of London

1951-1960

"Van Heurck Grand Model" microscope by W. Watson and Sons (No.8063) in mahogany case with accessories in oak cabinet

"Van Heurck Grand Model" microscope

1895-1905

Binocular microscope serial no. 1764 by Watson and Sons, 313 High Holborn, London, in wooden case, 1882-1900. Supposedly owned by William Quekett (1802-1888).

Binocular microscope serial no. 1764 by Watson and Sons

1882-1900

X-ray tube, used by Sir Arthur Hurst, by W. Watson and Sons, 313 High Holborn, London, England, 1918-1920.

X-ray tube

1918-1920

Stereo-plotter designed by F.V. Thompson, made by W.Watson and Sons, probably c. 1906

Stereo-plotter designed by F.V. Thompson

1906