Astrolabe Catalogue

Shadow square

Type: Shadow square
Geometry: Box
Unit of measurement: 1/12 of daylight
(Numbering) starts at: 0
(Numbering) ends at: 12
Numbered: every 2
Repeats: 4 times
Divided every: 2 (1/12 of daylight)
then every: 1 (1/12 of daylight)
Notes: Double shadow square in lower two quadrants

Scale located on: Tympan, Womb or Back .

Inscription(s):

Type: Scale label
Content: Vmbra versa
Translation:
Language: Latin
Script: Italic
Notes: Both vertical sides of the double shadow square are labelled outside the box
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Type: Scale label
Content: Vmbra recta
Translation:
Language: Latin
Script: Italic
Notes: Both horizontal sides of the double shadow square are labelled within the box
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