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Watson varifocal zoom lens model 75/6.7, 1948

1948

Sphere-gap kilovoltmeter (incomplete)

1919-1940

Watson high power research microscope with binocular head

1930-1940

Thermo Vane Dial Thermometer, 1915-1925

1915-1925

Watson Regulite microscope lamp, c.1957

1955-1960

Greenhough binocular stereo microscope

1925-1935

Microsystem 70 compound binocular phase contrast microscope

1965-1970

Stereoscopic research microscope

1957

Stereoscopic research microscope

1965

"Bactil" binocular microscope

1955-1962

Periscope no.4

1917

Binocular microscope

1955-1970

Microscope by W. Watson & Sons Limited

1955-1959

Watson's "Greenough" stereoscopic microscope

1945-1947

Watson Zoom Lens

The 'Royal' research microscope with mahogany case

1925-1940

Monocular reading microscope

Cavalry sketching board

Large gunsight telescope

Mechanical microscope stage, English, 1925-1945

1925-1945

Monocular microscope

1940-1945

‘Service’ Metallurgical microscope, used by Horace Dall

1935-1945

Microscope, model Bactil-60

1958-1962

Service microscope by W. Watson & Sons Limited

1955-1959

Pocket brass spectroscope by W. Watson & Sons Ltd.

1908-1928

Watson Model 75 Television Zoom Lens

1949-52

'Royal' microscope No. 62547

1937

Compound monocular microscope by W. Watson and Son Ltd.

1952

Kima model compound monocular microscope by W. Watson and Sons Ltd.

1930

Watson 5:1 Zoom lens Model 75 series

4½-inch micrometer theodolite

1901-1950
Objective, apochromatic, 16mm, in cannister

Objective, apochromatic

Microprojector, with x4, x10 and x40 objectives, by W. Watson & Sons Limited, English, 1960-1975

Microprojector, with x4

1960-1975
Two photomicrographic cameras with bench and accessories, by W. Watson & Sons Limited, English, 1908-1940

Two photomicrographic cameras with bench and accessories

1908-1940
Optical bench laboratory camera for photomicrography, by W. Watson & Sons Limited, English, 1908-1940

Optical bench laboratory camera for photomicrography

1900-1940
Stereoscopic microscope, with mahogany case, made by W. Watson and Sons Ltd., London, 1955-1962

Stereoscopic microscope

1955-1962
Illuminator, condenser, vertical, on bayonet catch

Illuminator, condenser, vertical, on bayonet catch

Objective, holoscopic, 12mm. in cannister, W. Watson & Sons Limited, 313 High Holborn, London, England.

Objective, holoscopic, 12mm. in cannister

Condenser, substage, on dovetail

Condenser, substage

Condenser, substage, holoscopic oil immersion, on dovetail

Condenser, substage

Objective, immersion, holoscopic oil, in cannister

Objective, immersion

Microscope lamp, by Wadden Instruments Ltd., supplied by W. Watson & Sons Limited, English, 1950-1965

Microscope lamp

1950-1965
Photomicrographic equipment, comprising 2 optical benches and 1 plate camera, by W. Watson & Sons Limited, English, 1920-1940

Photomicrographic equipment

1920-1940
Dental x-ray set, by W. Watson and Sons Limited, London, England, (power and control unit and tube stand), 1920-1929.

Dental x-ray set

1920-1929
Stand camera for 3 1/4 x 4 1/4 inch plates. Fitted with a Watson F:4 inches revolving disc with four stops (wide angle lens for 4 3/4 x 6 1/2 inch camera ); a Watson F: 6 1/2 inches f/8-44 No.823 (for 5 x4); a Ross anastigmat F: 135mm 5 3/8 inches f/8-64, No. 4288 Zeiss Patent; a Watson F:11 inch rapid rectilinear f/8-64 No.4042( for 8 1/2 x 6 1/2 inches); A Dallmeyer telephoto attachment 2 1/2 inch focus, rack and pinion extension. With focusing screen magnifier. Rack and pinion focusing, double extension. Sliding rising front. Swing back. Reversible back with swing out focusing screen. Ball level. No. 9807. W Watson and Sons.

Watson quarterplate stand camera outfit

1900
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

Stereo-projector comparator in leather case and 12 slide rails by W. Watson & Sons Limited, 313 High Holborn, London, England, 1915.

Stereo-projector comparator, British, 1915

1915
Monocular microscope No. 3862, by W. Watson & Sons Ltd, 131 High Holborn, London, for meteorograph records. 1908-1920.

Monocular microscope No. 3862

1908-1920
Howells ventilator apparatus prototype, made by Watson of Barnet, England, 1950-1960

Howells ventilator apparatus prototype

1950-1960
Howells ventilator prototype, developed by Thomas H Howells at General Barnet Hospital, London, 1950-1960

Howells ventilator apparatus prototype

1950-1960