The item is a ink on linen drawing of a propeller used by the Aerial Experiment Association (A.E.A.). It is unclear if this is a reproduction using materials from the era (ie. linen), a contemporary copy, or an actual record from A.E.A. A section under the title called “notes” is partly obscured by mould damage. It appears to say: “On basis of 8” tip and 7 1/8 rise 2” back from Cutting Edge and with maximum thickness of 5/16” 3” back from Cutting Edge with 8” Cylinder 40 H.P. Engine turns [illegible] Revolutions. Pitch 17”. “