Pencil detonator

An array of World War 2 pencil detonators displayed at the Museum of the British Resistance Organisation at the Parham Airfield Museum, 2007

A pencil detonator or time pencil is a time fuze designed to be connected to a detonator or short length of safety fuse. They are about the same size and shape as a pencil, hence the name. They were introduced during World War II and developed at Aston House, Hertfordshire, UK.


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