Astrolabe Catalogue

Throne

The throne is of the simple, engraved type with c-shaped scroll work support(s). The throne is attached with a screwed base. The throne is a single lob, engraved on the front and the back. The front bears Franciscus Paduanius of Forli's coat of arms. The back is decorated with a symmetrical foliate pattern.

Ring

The ring is of the simple, round cross-section type (i.e. simple plain ring made from a round rod or piece of metal).

Shackle

Shackle of the omega type (i.e. Ω-shaped shackle). The shackle is decorated with a 7-petalled flower and engraved.

Mater

The mater and limb are of three pieces construction. The limb is composed of two parts: a twelve-sided band attached to the outside of the circular band. The limb is cracked at XI o'clock. Scales on the limb:

Type	Range & Units	Numbered	Geometry	Location
Equal hours	I - XII Times of day	Every 1 hours	Circular, concentric	edge
Degree	90 - 0 Degrees of arc	Every 10 degrees	Circular, concentric	outer2

Womb

The womb contains an ornate Quadratum nauticum with a full wind-rose.
The womb contains 2 scales of the following types:

Type	Range & Units	Numbered	Geometry	Location
Quadratum nauticum	0 - 90 Degrees	Every 10 degrees	Box	None
Windrose	N/A Direction	Not numbered	Circular, concentric	None

The womb is inscribed:

Content	Translation	Notes	Type
MERIDIES	South	This direction is associated with the quadratum nauticum	Direction
OCCIDENS	West	This direction is associated with the quadratum nauticum	Direction
SEPTENTRIO	North	This direction is associated with the quadratum nauticum	Direction
ORIENS	East	This direction is associated with the quadratum nauticum	Direction