Faint sketches revealed by restoration (recorded as blank)
The transcription lists this side as empty, but faint drawings are now visible.
The e-Leo transcription records this side of the leaf as blank — 'invisible before restoration, devoid of writings or drawings.' In fact the restored sheet now carries faint pen sketches: a spoked wheel and upright frame at the left, a boxlike structure across the centre, and further members toward the right. The Codex Atlanticus catalogue tags the leaf with geometry — a square and pyramid, and a square of proportionality — and with architectural sketches. Because the drawings had been pasted down and hidden, they remain very faint and no accompanying text is legible.
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Faint mechanical sketches uncovered by restoration
The strongest marks are a spoked wheel and an upright frame at the left, a long boxlike element crossing the centre, and further linkages toward the right edge. All are extremely faint, consistent with the note that this side was invisible before the leaf was restored.