Ubicación virtual: Telegraphy

Metal and wood device with lowering levers for intercommunication.

Device with a metal case, rotary dial, metal cradle and integrated handset. Plastic cord.

Used on wall phones that had a side hook for hanging.

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

Wooden device integrating tape receiver, electromagnet and signal drive system. Measurement dial and bell.