Cog wheels (detail), late 15th or early 16th century (1954).Artist: Leonardo da Vinci
2-320-676 - The Print Collector/Heritage Images
Cog wheels (detail), late 15th or early 16th century (1954). Codex Atlanticus, 372r-b. A print from Leonardo da Vinci by Ludwig H Heydenreich, Macmillan, London, 1954.