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No. 10 MK I
The No. 10 Mk 1 'Time Pencil' is an obsolete chemical delay fuze, copied by Yugoslavia as the UDVK. The British Time Pencil can be referred to as the UDVK in regions such the Balkans however. A spring-loaded striker runs axially through the tubular copper body, held back by a retaining wire. This wire runs to the end of the fuze body, where it meets a glass ampoule filled with corrosive liquid. The fuze is fitted with a fuze adaptor which is crim...
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