- Large Jointless Induction Coil According to R...
- Early Electromagnetic Motor, c. 1860...
- Electro-Magnetic Motor with Rotating Geissler...
- Electro-Magnetic Motor with Rotating Geissler...
- 2 Electric Motors, c. 1920...
- 1 Electric Motor and 2 Measuring Instruments,...
- Large Induction Coil by Max Kohl, c. 1915...
- Very Large Induction Coil by Max Kohl, c. 191...
- Large Induction Coil According to Ruhmkorff, ...
- Large Induction Coil According to Ruhmkorff, ...
- Large "Nivoc" Laboratory Induction Coil, c. 1...
- Large 16-Inch Induction Coil According to Ruh...
- Electric Motor by Cloris-Baudet, c. 1880...
- 3 Induction Coils and 5 Leyden Jars...
- Group of Physical Demonstration Models...
- Large High-Voltage Apparatus According to Tes...
- Radiaver by Saint-Gobain, 1937 onwards...
- Rotax Mercury-Jet Interrupter, c. 1920...