Automatic telephone set with central battery and ringing disc with internal buzzer. Automatic model made of black bakelite.

Table-top telephone, model 5525-B, made of black bakelite, magneto call and local battery. The microphone was powered by two 1.5 V batteries.

Test table

Central battery switchboard, can be used for the service of subscribers in manual central battery centres or in those equipped with automatic service. The capacity of these switchboards is from 3 to 5 extension lines, and can be extended...

INTERCOM 13 LINES

TVE2 ADJUSTMENT LETTER RTVE

Intended for measuring telephone lines. It performs calibrations at hourly intervals, without the need to suppress the input signal. It is also used for sophometric measurements, giving the equipment to be measured a sophometric voltage, equivalent to...

TRANSPORT : EBRO TRUCK

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