Survey table: wall lengths and compass bearings
Two columns pairing measured lengths with wind-rose directions
The page holds two columns of figures, each entry pairing a length with a compass bearing drawn from the Italian wind rose - sirocco (SE), mezzodi (S), libeccio (SW), ponente (W), maestro (NW), tramontana (N) and their fractional subdivisions. They record the successive segments and orientations of a wall circuit, the data plotted as a measured perimeter on the following folios. The right column runs from 87 to 76; the left from 60 to a final west-north-west bearing.
On this page
Right column of bearings
The right-hand column lists lengths against directions such as sirocco (SE), mezzodi (S) and libeccio (SW), with fractional turns of the wind rose - for example 87 SE a third, 62 1/2 S toward SW, and 90 S. Each line fixes one stretch of the circuit.
Left column of bearings
The left-hand column continues around the circuit toward the west and north - ponente (W), maestro (NW), tramontana (N), greco (NE) - reaching long runs such as 270 N and 160 1/2 NW toward N. The figures set the orientation of successive wall segments.