A 3" solid brass clock that features four silent zones to indicate that 3 minutes after the hour, the 1/2 and each quarter, that radio silence should be made so that distress calls can clearly be heard by the emergency services.
The clock also features a bevelled glass edge and contains Quartz crystals that possess the remarkable property of oscillating at a regular and predictable frequency when subjected to an electrical current. The first Quartz clocks were launched back in the late 1920's and went on to supersede mechanical movements thanks to their accuracy and reduced need for maintenance.
Front Facia Ø: 7.5cm
Base Ø: 12cm
A solid brass clock with quartz movement and four silent zones.
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