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WWII S.O.E ITEMS IN FRAME
Special Operations Executive S.O.E. items such as Time pencils. Time pencils were fuzes timed by acid corroding a thin wire , when the wire broke a spring forced a pin onto a percussion cap exploding a small charge.
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Timing could be erratic in different temperatures, a colour code denoted the time period of each fuze. Used mainly by resistance movements in various Countries.
The items shown are colour time code Green. Trip wire Detonators and Trip Wire a small compass Nicknamed 'Button' because of its size, but not actually a button as in Item A1121. A Safety Fuse, and a Rail Detonator for positioning on a train line.
Rail Detonators are still used today for warning purposes.