Moving magnet galvanometer with dial inscribed "Greenwich Mean Time", 1843-1897
1843-1897
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
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
Tangent galvanometer
1864-1886
Moving-magnet null galvanometer
Tangent galvanometer
1881-1926
Astatic galvanometer
Horizontal galvanometer, portable, Post Office form
1890-1930
General Post Office Differential Line Detector
1910-1920
Self-contained, reflecting pattern
1943-1970
Moving coil galvanometer
1900
W. G. Pye string galvanometer
1910
Cambridge Instrument Company ballistic galvanometer
1955
Unipivot Galvanometer
1959-1961
Zernike galvanometer, by Kipp und Zonen, 1920-1930
1920-1930
Moving coil portable galvanometer
1890-1891
Galvanometer Scale and Lamp Mounting Bracket on stand
1963
Moving-magnet galvanometer
1890
Weston galvanometer, model 375, 30-0-30
1926
Moving-magnet galvanometer
Weston model 440 galvanometer
1926
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
Moving-magnet galvanometer
Linesman's galvanometer
Small galvanometer.
1888
Galvanometer, British Insulated and Helsby Cables Limited
circa 1902-1925
Moving-magnet mirror galvanometer
Kelvin & James White moving coil galvanometer
1903
Ayrton & Mather galvanometer, 1901-1908
1901-1908
Cambridge Scientific Instrument Company galvanometer
Moving coil galvanometer by Evershed & Vignoles Ltd
1908
Cambridge Instrument Company moving coil galvanometer
1960
Moving coil galvanometer
1937
Galvanometer Telegraph
1859
Telegraph Line Tester
1880-1920
Lord Kelvin's mirror galvanometer with lamp and stand, 1858.
1858
Sullivan patent portable galvanometer
1898-1913
Moving-coil galvanometer
1906
Aperiodic/ballistic moving-coil reflecting galvanometer by H. Tinsley and Co.
1920
Adjustable aperture on brass stand, accessory for galvanometer
1850-1924
H. Tinsley & Co mirror galvanometer
circa 1910