Astrolabe tympan report

Tympan

This tympan contains scales normally found on the back of an instrument.

Type	Range & Units	Numbered	Geometry	Location
Zodiacal signs	0 - 30 Zodiacal divisions, equal or unequal	Every 5	Circular, concentric	1-4
Calendar	first day of month - last day of month Days of year	Every 5 days	Circular, concentric	5
Unequal hours	1 - 12 1/12 of daylight	Every 1 hours	Arc	UL
Unequal hours	1 - 12 1/12 of daylight	Every 1 hours	Arc	UR
Shadow square	0 - 12 Fingers	Every 3 fingers	Box	a
Shadow square	0 - 12 Fingers	Every 3 fingers	Box	d
Shadow square	0 - 12 Fingers	Every 3 fingers	Box	b
Shadow square	0 - 12 Fingers	Every 3 fingers	Box	c

Astrolabe Catalogue