Water clock, rotating device and ditch-digging schemes
A striking water clock, a bladed mechanism, and diagrams for excavating a ditch
A crowded sheet of small pen sketches. At the top a striking water clock is drawn with a bell and a stepped cascade, noted as a clock that sounds the 24 hours with the water falling half a braccio, and another that both shows and strikes the hours. Below are a device of rotating blades with a hanging counterweight and a vessel labelled with air (m - air - n), a box-like water container at the right, numbered markers for a ditch excavation, and small stacked boats noted 'for submerging'.
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Striking water clock sounding the 24 hours
A water clock with a bell and stepped cascade is described as sounding 24 hours while the water falls half a braccio, and a second one that both shows and strikes the hours. The mechanism is timed by the descent of the water.
Rotating blades with counterweight and vessel
A small mechanism of rotating vanes is drawn with a hanging weight and a container, labelled between the points m and n with 'air' in the middle. It appears to be a device moved by air or falling water acting on the vanes.
Numbered scheme for excavating a ditch
A row of markers numbered 1 to 7 lays out positions for a ditch excavation, the theme developed fully on the facing sheet. Dotted lines and points map how the digging is to be organised.
Stacked small boats 'for submerging'
At the lower part of the sheet small boats are drawn one above another, annotated 'for submerging'. The note marks a submersion device rather than an ordinary vessel.