| Date | ca. 1400 |
| Place | Paris (?) |
| Material | Brass |
| Inventory no. | 41468 |
| Acquisition | Presented by Lewis Evans in 1924 |
Rule
| Appearance | Tip | Sights | Pinholes | Notches | Description |
|---|---|---|---|---|---|
| Double-ended, counter-changed, replacement. | Gothic, simple | None | None | None |
Alidade
| Appearance | Tip | Sights | Pinholes | Notches | Description |
|---|---|---|---|---|---|
| Double-ended, counter-changed, replacement. | Gothic, simple | Rigid | Single | None |