Line, plumb and triangle figures with directional arrows
Untranscribed mirror-script beside geometric constructions at the right margin
Blocks of mirror-script fill the left and center of this leaf while a column of small diagrams runs down the right margin; the bundle gives no transcription, so the text is described only by what is drawn. At the top right an inclined straight line is stepped with lettered points; in the middle a bent, right-angled line carries a small weight hung from its lower end like a plumb; and near the foot a triangle is drawn with directional arrows along its sides and a divided base. The figures read as geometric constructions tied to weights and lines of direction. A Bibliotheque de l'Institut de France stamp marks the sheet.
On this page
Triangle with a divided base and arrowed sides
A triangle drawn near the foot of the right margin has directional arrows running along its two upper sides toward the apex and a base marked into divisions. Lettered points sit at its corners, setting out a proportional construction.
Bent line with a suspended weight (plumb)
A right-angled or bent line stands in the middle of the right margin with a cord and small weight hanging from its lower end, drawn like a plumb line or set-square used to test the vertical.
Inclined line stepped with lettered points
An inclined straight line at the top of the right margin is broken by small steps or marks and tagged with letters, a graduated line used to measure divisions along its length.