Ubicación virtual: Telegraphy

Wooden base with device to send signals.

Wooden base with metallic components for emission of electrical impulses.

Wood-based appliance. Gear system. Tape receiver and electromagnet with signal drive.

Portable device. Wooden box with electromagnet and signal drive. It usually works on batteries.

Portable device. Wooden box with electromagnet and circle with letters. Signal drive system with impulse needle.

Metal and wooden appliance. Magnetic field formed by the legs of the

Wooden base, transformer and signal drive.