Codex Atlanticus
CA f. 70 r: Studies of a mechanical wing and river bed sketches
Technique
Red pencil
Year
c. 1490
The lower sheet shows an accurate drawing of a mechanical wing, with details of the mechanisms in the upper part and sketch of the machine seen from the front. The top sheet reports studies on a riverbed, with observations on the composition of the gravel and on the easiest fordable points.
