| Reference number | MS/257/5/61 |
| Alternative reference number | Sa.1741 |
| Previous numbers | ES5/16/1741 |
| Level | Item |
| Title | Mean Magnetic Dip observed at Greenwich compared with the interpolated values at Regent's Park |
| Date | [1838-1854] |
| Description | Includes a table depicting the dip value for Regents Park and Greenwich, and the difference between the two, if the value has increased or decreased year to year. |
| Extent | 1p |
| Format | Manuscript |
| Physical description | Ink on paper |
| Access status | Open |
| Related records in the catalogue | MS/257/5/60 |