Proportional grid and a fan of construction lines
A faint rectangle marked with fractions and a broad sweep of radiating lines
This largely blank opening carries, at the upper right of folio 84r, a rectangle subdivided into compartments and annotated with fractional numbers and letter labels, together with a broad fan of faint radiating construction lines that sweeps across the sheet. No running text was transcribed for the page, and further untranscribed numerals and faint notes are present. The drawing continues the notebook's geometrical and percussion studies.
On this page
Rectangle divided by fractional proportions
At the upper right of folio 84r a rectangle is subdivided into compartments and annotated with fractional quantities and letter labels, proportioning the figure into parts. Further untranscribed numerals that the bundle did not include are present around the construction.
Broad fan of radiating construction lines
A wide, faintly drawn fan of straight lines radiates from a point and sweeps across the opening, resembling the graduated angle fans used elsewhere in these percussion studies. The lines are lightly scored rather than inked.