 Four different lightning arrestors |
 Keyboard and distributor for Baudot telegraph by J. Carpentier of Paris France |
 Typical French Morse telegraph by Digney |
 Double current key used with the single-needle telegraph and also the double-plate sounder |
 Large induction coil by Ducretet, in use in the early years of wireless circa 1900 |
 Five relays |
 Old French Morse telegraph with relay |
 GPO (British) key |
 Ground telegraph which used the earth as a transmission medium (up to 5 kilometers). From World War I |
 Marconi coherer circa 1899 |
 Marconi induction coil |
 GPO (British) key |
 Very old Morse telegraph |
 Italian Morse telegraph Sab-Milano |
 Some special sounders |
 Ticker (receive only) used by Agence Havas in France for broadcasting sports results (early 20th century) |
 Mirror galvanometer by Sullivan |
 Various switches |
 Tangent galvanometer |
 Three old relays |
 Two old relays |
 Duplex sounder on left, Belgian drum sounder on right |
 Two toy telegraphs |
 On the left Arc transmitter (Ruhmkorff induction coil) and on the right coherer detector |