| Date | ca. 1560 |
| Place | France |
| Material | Brass |
| Inventory no. | 41409 |
| Acquisition | Presented by Lewis Evans in 1924 |
Rule
| Appearance | Tip | Sights | Pinholes | Notches | Description |
|---|---|---|---|---|---|
| Single-ended, counter-changed, original. | Simple | None | None | None |
Alidade
| Appearance | Tip | Sights | Pinholes | Notches | Description |
|---|---|---|---|---|---|
| Single-ended, counter-changed, original. | Gothic, simple | Rigid | Double | None |