| RefNo | RBO/17/5 |
| AltRefNo | RBO.17.19 |
| Level | Item |
| Title | 'Description of an Instrument to shew the difference between the true and Apparent horizon' by Stephen Plank |
| Date | 1731 |
| Description | Instrument is an octant
Figure in text
Read to the Royal Society on 9 March 1731 |
| Language | English |
| Extent | 3 sides |
| Format | Manuscript |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedRecord | CLP/8ii/76 |