Vibrator, hand operated
1890-1920
Electrostatic machine
1801-1850
Multiple battery
1920-1940
Fuse box
1870-1930
Voltmeter, metal face set in wooden casing
1916
Low-frequency electrotherapy machine
1850-1880
Stand of Oudin resonator constructed from instructions given by Dr. Riviere
1880-1930
Induction coil
1851-1900
X-ray tube stand(?), Europe, 1895-1910
1895-1910
Condenser, in wooden casing
1801-1850
Pair of bichromate cells
1860-1900
Electric door bell from Tyler's shop
1901-1950
Ducretet spark coil
1901-1930
Tuning fork and electromagnet to show vibrations microscopically
1851-1900
Electrotherapeutic machine
1880-1910
Vacuum tube
1890-1920
Motor driven interrupter
Induction coil
1880-1910
8 accumulators for high frequency cabinet
Induction coil
1880-1910
White china switch and fuse box attached to rectangular wooden frame
1880-1920
Two electric leads
Industion coils
Spark gap
1880-1910
Rheostat consisting of 22 separate resistors
1870-1910