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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