Small bundle of Radar blocking 'Window' or 'Chaff'. Contains lengths of very thin strands of aluminium or aluminized paper strip wrapped in a card sleeve with a paper wrapping. These were thrown out of bomber aircraft in order to jam German Radar signals and prevent them from plotting the positions of approaching allied aircraft. Approximately 28 x 7.5 x 1.3cm. Wear to the wrappings but in good unused condition. Three bundles available, individually priced. See also another variation of this item currently listed. Stock code M23703/4/5.