| RGO Archives/RGO 18 contains: |
|---|
| <-- See earlier |
|---|
| 636 |
Star catalogue |
| 637 |
Number unassigned |
| 638 |
Description of the altazimuth |
| 639 |
Description of the transit circle |
| 640 |
Description of the transit circle |
| 641 |
Description of the galvanic chronographic apparatus |
| 642 |
Description of the Great Equatorial |
| 643 |
History of the water telescope |
| 644 |
History of the water telescope |
| 645 |
Description of the time-signal system |
| 646 |
Description of the time-signal system |
|
Greenwich Observations
| Title |
Description of the time-signal system |
| Reference |
RGO 18/646 |
| Covering Dates |
circa 1880 |
| Extent and Medium |
1 volume |
|
| Content and context |
A description of the Greenwich time-signal system, an appendix to the Greenwich Observations, 1879. There are no publication details. |
| No further on-line information. |
|
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