Tilting crucibles and a watercourse detail
Red-chalk crucibles with grips and supports, and a shallow stream detail
In red chalk the sheet shows crucibles of variable inclination fitted with grips and supports, apparatus for holding and tilting a melting vessel. A further drawing is a detail of watercourses, labelled a - n, with the note that the stretch a n is without depth. Faint additional chalk marks at the lower right remain untranscribed in the source.
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Crucibles of variable inclination with supports
The drawings show crucibles that can be set at varying angles, equipped with grips and supports for handling. They are melting vessels mounted so that they may be tilted and steadied.
A shallow stretch of a watercourse
A detail of watercourses is keyed a - n. Leonardo notes that the stretch a n is without depth.