Theatrum instrumentorum et machinarum Iacobi Bessoni Delphinatis ...

A geometric diagram representing a rectangular space with cardinal directions and a central scale. The rectangle is labeled "SEPTENTRIO" (North) at the top, "ORIENS" (East) at the right, "OCCIDENS" (West) at the left, and "MERIDIES" (South) at the bottom. Inside the rectangle is a horizontal scale marked with the numbers 6, 12, 18, 24. Surrounding the rectangle are labels for lines and angles: "Linea Septentrionalis" (Northern Line), "Angulus Septentrionis Orientis" (Angle of the North-East), "Linea Orientalis" (Eastern Line), "Angulus Meridiei Orientis" (Angle of the South-East), "Linea Meridionalis" (Southern Line), "Angulus Meridiei Occidentis" (Angle of the South-West), "Linea Occidentalis" (Western Line), "Angulus Septentrionis Occidentis" (Angle of the North-West), "Medium perpendiculare" (Perpendicular Middle), and "Medium" (Middle).

Northern Line.

Angle of the North-East

Angle of the North-West.

Perpendicular Middle.

NORTH

EAST

WEST

SOUTH

Eastern Line.

parallel

Middle

Western Line.

Angle of the South-West.

Angle of the South-East.

Southern Line.