Boulton and Paul Ltd was a storied British manufacturer dating from the eighteenth century that was bought in 1960 by the Jeld-Wen Corporation, an American building products supplier. During World War I, Boulton and Paul produced wooden propellers, and other aviation products including complete aircraft. These included the Royal Aircraft Factory FE2B and Sopwith Camel. Although other designs were produced, most Boulton and Paul propellers were probably designed by Lang, another well-known British manufacturer.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.