| Date |
ca. 1590 |
| Maker |
Erasmus Habermel |
| Place |
Prague (?) |
| Material |
Gilt copper |
| Inventory no. |
38097 |
| Acquisition |
Presented by J. A. Billmeir in
1957 |
Rule, Regula, Pointer and Alidade Images
Alidade Image:
Rule Image:
Rule
| Appearance |
Tip |
Sights |
Pinholes |
Notches |
Description |
| Double-ended, counter-changed,
original. |
Decorative |
None |
None |
None |
The right arm of the rule
is ornately engraved. |
Scales
| Range & Units |
Numbered |
Geometry |
Location |
| Declination |
0 - 80 Degrees |
Every 10 degrees |
Linear |
Rule, left arm |
Alidade
| Appearance |
Tip |
Sights |
Pinholes |
Notches |
Description |
| Double-ended, counter-changed,
original. |
Decorative |
Folding |
Double |
None |
|
Scales
| Range & Units |
Numbered |
Geometry |
Location |
| Equal
hours |
1 - 11 Times of day |
Every 1 hours |
Linear |
Rule, left arm |
| Equal
hours |
1 - 12 Times of day |
Every 1 hours |
Linear |
Rule, right arm |
