Shadow square
| Type: | Shadow square |
| Geometry: | Box |
| Unit of measurement: | Feet |
| (Numbering) starts at: | 1 |
| (Numbering) ends at: | 7 |
| Numbered: | every 1 |
| Repeats: | 2 times |
| Divided every: | 1 (Feet) |
Scale located on: Tympan, Womb or Back .
Location(s) detail:
| a: | Left hand vertical 'face' of the shadow square (in LL) (a) |
| b: | Left hand bottom face of the shadow square (in LL) (b) |