Proportional number pairs in pencil: 8-4-2 and 12-6-3
Faint pencil ratios beside beam-like sketches, continuing the balance studies
This verso carries only faint pencil work: two columns of numbers set out as proportional series, 8, 4, 2 on the left and 12, 6, 3 on the right, headed 'equa' (equal). The figures form matching halving ratios (8:4:2 and 12:6:3) that continue the weight-and-proportion reasoning of the surrounding leaves. Faint bracket- and beam-shaped sketches and a crossing 'x' are drawn below the numbers.
On this page
Two halving series set as a proportion
The pencil columns pair 8, 4, 2 against 12, 6, 3, each term half the one above it, forming matching ratios under the heading 'equa' (equal). The equal proportion links the two numeric ladders term for term.
Faint beam-and-loop sketches below the numbers
Beneath the numeric columns are faint pencil sketches of horizontal bars with looped ends and a crossing diagonal, of the kind used elsewhere on these leaves to figure a balance beam bearing weights. They are too light to read in detail.