Du Bois-Reymond-type induction coil, London, England, 1920-1940
1920-1940
Induction coil
1981
Sledge induction coil, Du Bois-Reymond type
Alfred Apps, London, 10-inch induction coil
1890
Medical induction coil
1925-1950
Induction coil with electrodes for electrotherapy, England, 1900-1910
1900-1910
Du Bois-Reymond style sledge induction coil with extendable track and magnetic interrupter
1953
Apps-Newton 10-inch induction coil, for X-ray work
1898
Medical induction coil
1910
Induction coil with interrupter made by J. Newman
1840-1857
Apps-Newton one inch induction coil by Newton & Co.
1898
Induction Coil
1881
Sectioned induction coil
1874
Induction coil
1920-1925
Induction coil stimulator
1968
Miniature induction coil, circa 1950
1950-1959
Miniature induction coil
Induction coil, mounted, with trembler
Induction coil, four terminals
Induction coil
Induction coil with integral spark-gap
1916
H.M.S Challenger Induction coil
1870
Sledge type induction coil by C.F. Palmer Ltd.
Electrotherapeutic induction coil, in case, c.1900
1900
Induction coil by Griffin and Tatlock Ltd.
1926-1954
Large Induction Coil, by Ruhmkorff, of Paris
1851-1877
Components for Spottiswoode Induction Coil
1876
Horizontal Induction Coil
1890-1900
Large induction coil by Alfred Apps
1879
Induction Coil
circa 1905
Induction coil with switch
1900-1980
Induction coil for x-ray use
1903-1929
Large induction coil with accessories.
1902
Induction coil
Induction coil by Newton & Co.
1901-1920
Induction coil described as an 'electric ozonizer'
10" induction coil
13 inch spark induction coil
1907