Theatrum instrumentorum et machinarum Iacobi Bessoni Delphinatis ...

NORTHERN LINE.

Figure Four.

A technical engraving of a mechanical compass or drafting instrument. The device features a central vertical shaft with a decorative finial, connected to a series of adjustable arms and points. To the right of the main mechanism is a large, conical, shaded object. Below the main instrument are three geometric shapes: a pentagon, a square, and a triangle.

WESTERN LINE. EASTERN LINE.

SOUTHERN LINE.