Induction Coil
Induction coil, part of low voltage x-ray set by Frederick R. Butt and Co., London, England, 1918-1919.
Parts of low voltage x-ray set by Frederick R. Butt and Co., London, England, 1918-1919.
Induction coil, part of low voltage x-ray set by Frederick R. Butt and Co., London, England, 1918-1919.
Mercury interrupter and rectifier part of low voltage x-ray set by Frederick R. Butt and Co., London, England, 1918-1919.
Small parts from low voltage x-ray set by Frederick R. Butt and Co., London, England, 1918-1919.
Wooden cabinet, part of low voltage x-ray set by Frederick R. Butt and Co., London, England, 1918-1919.
Moving coil milliammeter, electrostatic voltmeter and pair of electroles on insulated supports, part of low voltage x-ray set by Frederick R. Butt and Co., London, England.