Plans of a fortress with survey figures
Bastioned outlines annotated with lengths and SE bearings
Two plans of fortifications fill the sheet. The first, at the upper left, is annotated b, 18; the second, drawn upside down, gives 330 - 16 - 23 with bearings to the sirocco (SE): sirocco 23 and sirocco 16. A large polygonal outline traces a bastioned circuit, carrying a 550 measurement along one flank.
On this page
Plan of a fortification (b, 18)
A small fortification plan at the upper left is annotated b, 18, with repeated tick-marks. Bracketed pairs of figures nearby note further dimensions.
Inverted plan with SE bearings
An upside-down plan records 330 - 16 - 23 together with bearings toward the sirocco (SE): sirocco 23 and sirocco 16. The large bastioned outline below carries a 550 measurement along one side.