Box, Contact


These were contact units, that were part of the Gents watchman system.

A master clock was connected to many contact units, around a large premises and as the watchman patrolled the building they would operate each contact switch with a key.  The Clock would then print the time and contact point operated on a paper sheet.

The pictures are dated 1948.

 

 
BACK Home page BT/GPO Telephones Search the Site Glossary of Telecom Terminology Quick Find All Telephone Systems

Last revised: July 22, 2025

FM