Survey distances and compass bearings
Two columns of measured distances paired with north, northwest and northeast directions
The page is a survey record: two columns list measured distances, each paired with a compass bearing given in the Italian wind-names tramontana (north), greco (northeast), maestro (northwest) and ponente (west), often subdivided into halves, thirds and quarters of the interval between two winds. The left-hand column continues onto the facing folio 75r. These readings belong with the topographic survey of Urbino set out on the next page. The figures are written upside down relative to the notebook.
On this page
Distances taken toward north, northeast and northwest
One column pairs each distance with a wind-direction: for example 400 midway between north and northeast, 330 to the northwest, 370 to the north, and 150 at three-quarters from north toward northwest.
Bearings continuing onto folio 75r
A second column of distances and bearings runs from 110 (midway between northwest and west) through 286 (two-thirds from north toward northwest) to 100 (two-thirds from northwest toward west), invading the facing folio 75r.
