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 |