| Date |
early 17th century |
| Place |
Europe |
| Material |
Brass |
| Inventory no. |
54424 |
| Acquisition |
Presented by J. A. Billmeir in
1957 |
Rule, Regula, Pointer and Alidade Images
Alidade Image:
Alidade Image:
Alidade
| Appearance |
Tip |
Sights |
Pinholes |
Notches |
Description |
| Double-ended, counter-changed,
original. |
Simple |
Rigid |
None |
Single |
counter-changed with simple blunt pointers that were
probably actual pointers at one time -- they show signs
of having been filed off blunt.. |
Scales
| Range & Units |
Numbered |
Geometry |
Location |
| Equal
hours |
2 - 12 1/12 of daylight |
Every 1 hours |
Linear |
Rule, left arm |
| Equal
hours |
1 - 10 1/12 of daylight |
Every 1 hours |
Linear |
Rule, right arm |
Inscriptions
| Transcription |
Translation |
Notes |
Type |
| Hora occasus Solis |
|
On one arm of the rule. |
Scale label |
| Hora ortus Solis |
|
On the other arm of the rule. |
Scale label |
