Question: What did the technical device made by the british aeronautical engineer during the second world war do? 
Sentence (from "Elsie MacGill"): Elizabeth Muriel Gregory "Elsie" MacGill, OC (March 27, 1905 – November 4, 1980), known as the "Queen of the Hurricanes", was the world's first woman to earn an aeronautical engineering degree and was the first woman in Canada to receive a bachelor's degree in electrical engineering.
Relevant evidence: No