Four thyratron valves, in cardboard boxes, glass, with protective padding, European, second half 19th century Four thyratron valves 1851-1900
Electrostatic machine, part only, discharge bulb(2), glass bulb with metal fittings, European, 1880 to 1910 Electrostatic machine 1880-1910
Bedside right lamp in the form of a microscope, with brown phenolic base, and battery operated (battery concealed in base). Made in England, first half of 20th century Bedside lamp in the form of a microscope 1910-1950