Divided bar for wheels, jointed mechanism, and a ramped structure
Mechanical sketches with a wheel-and-gear, an octagon in a circle, and site labels 'garden' and 'road'
The sheet gathers a cluster of mechanical and structural sketches: a large platform or bridge carried on posts with an inclined ramp, toothed and cross-braced wheels, and a beam that a note tells the reader to divide into segments to make wheels. Below, a polygon is inscribed within a circle and further beams and jointed (articulated) elements are laid out. Brief marginal words label a 'garden' and a 'road', suggesting a site or layout context. Further faint marks and sketches are present that the transcription does not cover.
On this page
A six-braccia bar divided to make wheels
A note beneath the first figure instructs the maker to take a bar six braccia long and divide it, and to let that serve as the wheels. It reads as a practical rule of proportion for laying out the wheels of a mechanism from a single measured beam.
Ramped platform on posts
The upper center shows a raised platform or bridge deck supported on posts with an inclined ramp leading up to it, drawn in part-perspective and part-elevation. Its purpose is not stated in the transcribed notes.
Polygon inscribed in a circle
Near the middle of the sheet a many-sided polygon is drawn inside a circle, a construction figure set among the mechanical studies.
Figure of jointed elements
A caption marks a 'figure of jointed elements' whose accompanying note breaks off after 'From ...'. The drawing shows articulated links or members intended to move relative to one another.