Geometric construction with columns of calculation
Proportional distances between lettered points, arithmetic worked in the margins, faint sketches above
Written with the sheet inverted, the page joins a geometric construction of concentric arcs and radiating lines among lettered points with two brief propositions on proportional distances and several columns of arithmetical working. One note says a point lies as much nearer d than b as a b stands higher than c d; another states that a b equals c o. Faint sketches at the top of the sheet, not transcribed, read as small mechanical or built forms.
On this page
A point nearer d than b in proportion to height
Among the lettered points a, c, d, e, b, the note states that the point will be as much nearer to d than to b as the segment a b stands higher than c d.
Equality a b = c o
A second lettered figure records that a b is equal to c o for the points b, p, o, a, c.
Columns of calculation
Several columns of numbers are worked down the sheet — multiplications and running sums including values such as 144, 168, 204 and 272 1/7 — set beside the geometric figures.
Faint sketches at the head of the sheet
Above the main construction are lighter, untranscribed sketches that read as small built or mechanical forms; the catalogue tags the sheet with instruments and machines. No text describing them is given in the bundle.