One piece aeroplane propeller

Title (Dublin Core): One piece aeroplane propeller
Subject (Dublin Core): en Technology; en Airplanes and Zeppelins
Article Title and/or Image Caption (Dublin Core): Four blade aeroplane propeller, the biggest ever built, of 8ft. radius
Language (Dublin Core): en
Temporal Coverage (Dublin Core): World War, 1914-1918; World War I
Date Issued (Dublin Core): 1915-06
Is Part Of (Dublin Core): Popular Mechanics, v. 23, n. 6, 1915
pages (Bibliographic Ontology): 876
Rights (Dublin Core): Public Domain

Media: One piece blade propeller; https://books.google.it/books?id=ld8DAAAAMBAJ&lpg=PA759&hl=it&pg=PA877#v=onepage&q&f=false