| Reference number | RBO/11/90 |
| Alternative reference number | RBO.11.324 |
| Level | Item |
| Title | 'Account of Observations made of the Variation of the horizontal Needle at London in the Latter part of the year 1722 and beginning of 1723' by George Graham watchmaker |
| Date | 1723 |
| Description | Details about the compass and how the observations were made |
| Language | English |
| Extent | 11 sides |
| Format | Manuscript |
| Digital images | View item on Science in the Making |
| Access status | Open |
Fellows associated with this archive
| Code | Name | Dates |
| NA8405 | Graham; George (1673 - 1751) | 1673 - 1751 |