Mirror galvanometer for the transatlantic telegraph, 1858
1858
Thomson's mirror marine galvanometer, 1858
1858
Thomson's mirror galvanometer, 1858
1858
Lord Kelvin's 'ironclad' marine galvanometer, 1865-1866
1865-1866
William Thomson's marine mirror galvanometer, 1850-1900
1854
Vertical galvanometer, 1830-1870
1830-1870
Moving magnet galvanometer with dial inscribed "Greenwich Mean Time", 1843-1897
1843-1897
Henley needle galvanometer, 1855-1860
1855-1860
Galvanometer from prototype Cox selenium-cell magnifier equipment, 1910-1920
1910-1920
Thomson mirror speaking galvanometer, 1858
1858
Weston galvanometer, model 375, 30-0-30
1926
Lord Kelvin's mirror galvanometer with lamp and stand, 1858.
1858
Weston model 440 galvanometer
1926
Tangent galvanometer
1864-1886
Telegraph Line Tester
1880-1920
Zernike galvanometer, by Kipp und Zonen, 1920-1930
1920-1930
Moving-magnet galvanometer
1890
Ballistic reflecting galvanometer, London, England, 1920-1955
1920-1955
Moving coil portable galvanometer
1890-1891
Tangent galvanometer
1881-1926
Sullivan patent portable galvanometer
1898-1913
Sullivan universal galvanometer No. 857
Astatic galvanometer
Galvanometer Telegraph
1859
Galvanometer Scale and Lamp Mounting Bracket on stand
1963
Moving coil galvanometer
1900
Astatic galvanometer
1852-1870
Moving-magnet galvanometer
W. G. Pye string galvanometer
1910
Small galvanometer.
1888
Cambridge Scientific Instrument Company galvanometer
Moving-magnet null galvanometer
Tangent galvanometer, in mahogany case
1878-1900
Moving coil galvanometer
1937
Galvanometer, British Insulated and Helsby Cables Limited
circa 1902-1925
Bridge box
1900
Moving-coil galvanometer
1906
Unipivot Galvanometer
1959-1961
Cambridge Instrument Company ballistic galvanometer
1955
General Post Office Differential Line Detector
1910-1920
Moving-magnet mirror galvanometer
Johnson and Philips thermogalvanometer
1906
Horizontal galvanometer, portable, Post Office form
1890-1930
Moving-magnet galvanometer
Self-contained, reflecting pattern
1943-1970
Moving-coil mirror glavanometer made by the Cambridge Instrument Co. Ltd.
1935
Linesman's galvanometer
Adjustable aperture on brass stand, accessory for galvanometer
1850-1924
Cambridge Instrument Company moving coil galvanometer
1960
Galvanometer, England, 1921
1921