[.]
June 25th
7:38 PM
Sketches
… of a bellows-operated machine for raising water, and a man (presumed self-portrait) drawing an armillary sphere with the help of a perspectograph.
These are from around 1480, and his sketching style hadn’t quite yet arrived at the elegant stage.

Sketches

… of a bellows-operated machine for raising water, and a man (presumed self-portrait) drawing an armillary sphere with the help of a perspectograph.

These are from around 1480, and his sketching style hadn’t quite yet arrived at the elegant stage.

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