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Thomson's Mirror Marine Galvanometer, 1858

Electricity and Magnetism

1858

Thomson's Mirror Galvanometer, 1858

Telecommunications

1858

Mirror galvanometer for the transatlantic telegraph, 1858

Electricity and Magnetism

1858

Lord Kelvin's 'ironclad' marine galvanometer, 1865-1866

Electricity and Magnetism

1865-1866

Henley needle galvanometer, 1855-1860

Telecommunications

1855-1860

Galvanometer from prototype Cox selenium-cell magnifier equipment, 1910-1920

Telecommunications

1910-1920

Vertical galvanometer, 1830-1870

Electricity Supply

1830-1870

William Thomson's marine mirror galvanometer, 1850-1900

Telecommunications

1854

Moving magnet galvanometer with dial inscribed "Greenwich Mean Time", 1843-1897

Time Measurement

1843-1897

Thomson mirror speaking galvanometer, 1858

Telecommunications

1858

Weston model 440 galvanometer

Electricity and Magnetism

1926

Galvanometer, England, 1921

Clinical Diagnosis

1921

Sullivan patent portable galvanometer

Electricity and Magnetism

1898-1913

Ballistic reflecting galvanometer, London, England, 1920-1955

Laboratory Medicine

1920-1955

Small galvanometer.

Time Measurement

1888

Galvanometer, British Insulated and Helsby Cables Limited

Electricity and Magnetism

c1902-1925

Lord Kelvin's mirror galvanometer with lamp and stand, 1858.

Telecommunications

1858

Telegraph Line Tester

Telecommunications

1880-1920

Galvanometer in frame

Electricity and Magnetism

1900

Unipivot Galvanometer

Telecommunications

General Post Office Differential Line Detector

Telecommunications

1910-1920

H. Tinsley & Co mirror galvanometer

Electricity and Magnetism

c.1910

Standard galvanometer by Robert W. Paul

Farnborough

Moving-coil galvanometer, serial no.3828, by The C

Electricity and Magnetism

1906

Moving coil portable galvanometer

Electricity and Magnetism

1890-1891

Johnson and Philips thermogalvanometer

Electricity Supply

1906

W. G. Pye string galvanometer

Electricity and Magnetism

1910

Zernike galvanometer, used for measurement of muscle heat production, associated with A.V. Hill, by Kipp and Zonen, 1920-1930

Zernike galvanometer, by Kipp und Zonen, 1920-1930

Laboratory Medicine

1920-1930

Moving coil galvanometer Manufactured by Everett, Edgcumbe and Company Limited

Moving coil galvanometer

Electricity and Magnetism

1937

Paschen-type galvanometer for measuring electromagnetic radiation, part of an infrared spectrometer, by Cambridge Instrument Company Limited, prepared by Harold Thompson, Oxford, Oxfordshire, England, 1934-1941

Galvanometer, used by Harold Thompson

Experimental Chemistry

1934-1941

Moving-coil galvanometer, made by Sullivan, with moving-coil removable, and spare moving coil unit

Moving-coil galvanometer

Electricity and Magnetism

Ayrton and Mather galvanometer with three interchangeable suspension units, by Baird & Tatlock

Ayrton and Mather galvanometer

Electricity and Magnetism

1920

Tinsley spot galvanometer, light source and stand (for scale,missing) used in the estimation of molecular weights of organic compounds by Fisons Pest Control in 1962, made by H. Tinsley and Co, London

Tinsley spot galvanometer, light source and stand

Experimental Chemistry

c.1961

Obach's tangent galvanometer

Electricity and Magnetism

1889

Circular moving coil galvanometer in wooden box. Also has wooden four legs. Manufactured by Cambridge Instr. Co.

Circular moving coil galvanometer

Electricity and Magnetism

W. H. Preece galvanometer telegraph, 1859.

Galvanometer Telegraph

Telecommunications

1859

moving coil galvanometer in wooden case. manufactured by Everett Edgcumbe, 1945

Everett Edgcumbe galvanometer

Electricity and Magnetism

1945

Galvanometer movement for Kingston light projector. Mirror galvanometer movement for 1.2cm mirror on armature, tilted by attraction to electromagnet. Clamping screw. In 10.2cm diameter circular casing.

Galvanometer movement for Kingston light projector

Cinematography

A galvanometer, manufactured by W.G. Pye & Co. Ltd..

galvanometer

Textile Industry

1950-1969

galvanometer. In wooden box with leather carying handle, and contains batteries.

Siemens galvanometer

Electricity and Magnetism

1880

Galvanometer Charge/Discharge (coil missing), Type no. 189

Marconi Wireless Telegraph Company galvanometer

Radio Communication

1920s