Mirror galvanometer for the transatlantic telegraph, 1858
1858
Thomson's mirror marine galvanometer, 1858
1858
Lord Kelvin's 'ironclad' marine galvanometer, 1865-1866
1865-1866
Moving magnet galvanometer with dial inscribed "Greenwich Mean Time", 1843-1897
1843-1897
Henley needle galvanometer, 1855-1860
1855-1860
Thomson's mirror galvanometer, 1858
1858
William Thomson's marine mirror galvanometer, 1850-1900
1854
Vertical galvanometer, 1830-1870
1830-1870
Unipivot Galvanometer
1959-1961
General Post Office Differential Line Detector
1910-1920
Tangent galvanometer
1864-1886
Moving-magnet null galvanometer
Tangent galvanometer
1881-1926
Astatic galvanometer
Horizontal galvanometer, portable, Post Office form
1890-1930
Zernike galvanometer, by Kipp und Zonen, 1920-1930
1920-1930
Self-contained, reflecting pattern
1943-1970
Moving coil galvanometer
1900
W. G. Pye string galvanometer
1910
Cambridge Instrument Company ballistic galvanometer
1955
Lord Kelvin's mirror galvanometer with lamp and stand, 1858.
1858
Moving coil portable galvanometer
1890-1891
Galvanometer Scale and Lamp Mounting Bracket on stand
1963
Sullivan patent portable galvanometer
1898-1913
Moving-magnet galvanometer
1890
Weston galvanometer, model 375, 30-0-30
1926
Moving-magnet galvanometer
Weston model 440 galvanometer
1926
Moving-coil galvanometer
1906
Moving-coil mirror glavanometer made by the Cambridge Instrument Co. Ltd.
1935
Tangent galvanometer, in mahogany case
1878-1900
Bridge box
1900
Sullivan universal galvanometer No. 857
Astatic galvanometer
1852-1870
Telegraph Line Tester
1880-1920
Moving-magnet galvanometer
Linesman's galvanometer
Ballistic reflecting galvanometer, London, England, 1920-1955
1920-1955
Aperiodic/ballistic moving-coil reflecting galvanometer by H. Tinsley and Co.
1920
Adjustable aperture on brass stand, accessory for galvanometer
1850-1924
Small galvanometer.
1888
Galvanometer, England, 1921
1921
Kelvin & James White moving coil galvanometer
1903
Galvanometer, British Insulated and Helsby Cables Limited
circa 1902-1925
Galvanometer Telegraph
1859
Ayrton & Mather galvanometer, 1901-1908
1901-1908
Moving-magnet mirror galvanometer
Moving coil galvanometer
1937
Cambridge Scientific Instrument Company galvanometer
Moving coil galvanometer by Evershed & Vignoles Ltd
1908