Nghệ sĩ: Leonardo Da Vinci
ngày: 1492
kích thước: 27 x 19 cm
viện bảo tàng: Royal Collection (London, United Kingdom)
Kỹ thuật: Drawing
On the recto of the sheet, drawings of ground plans and elevations of a bronze-casting apparatus, including designs of pulleys and cog-wheel mechanisms, with accompanying notes. On the verso, notes and diagrams of ground-plans of casting apparatus, and literary quotations as if from a commonplace book. These are some of Leonardo
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