Design for a chair with a braced supporting frame
Perspective sketch of a tall-backed seat, with a note to measure 'the Sicilian's' leg
A perspective drawing shows a tall, arch-backed chair standing on a diagonally braced frame. A note explains that two wooden pieces resting against the back at the axis m, and below at o n, are what keep the chair upright. A separate memorandum at the top of the sheet instructs measuring 'the Sicilian's' leg from behind and from the front, raised and extended.
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Braces that keep the chair upright (m, o, n)
Two pieces of wood are described as resting against the back on the axis m and below at o n; these members are what hold the chair rigid and upright. They correspond to the diagonal struts drawn across the seat frame.
Memorandum: measure the Sicilian's leg
A note directs measuring the leg of 'the Sicilian' from behind and from the front, both raised and extended. It records a study of a specific person's leg in several positions.