| RefNo | HS/19/222 |
| Level | Item |
| Title | Instructions on use of sextant, by Basil Hall |
| Date | 24 April 1833 |
| Description | Handwritten instructions on the use of the sextant for astronomical observations at sea, entitled "memos", signed and dated by Basil Hall. Detailed cleaning instructions, pairing with telescope, handling and reduction of errors in reading. |
| Language | English |
| Extent | 12 ff. |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| Place origin | London |
| Origin coordinates | 51.507222, -0.1275 |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); astronomer | 1792 - 1871 |
| NA3408 | Hall; Basil (1788 - 1844); naval officer and author | 1788 - 1844 |