| RefNo | RBO/16/32 |
| AltRefNo | RBO.16.176 |
| Level | Item |
| Title | 'A description of an Instrument for finding the Latitude from two observations at any time of the Day' by Richard Graham |
| Date | 1731 |
| Description | Instrument represents half of a globe - provides four propositions for how it works
Original figures of instrument attached
Read to the Royal Society on 9 December 1731 |
| Language | English |
| Extent | 6 sides |
| Format | Manuscript |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedMaterial | Printed in 'Philosophcial Transactions', vol 38, no 435, p 450
JBO/15/34 |