| RefNo | RBO/17/6 |
| AltRefNo | RBO.17.21 |
| Level | Item |
| Title | Description of a Dial invented by William Ross of Hanly Castle in the county of Worcester |
| Date | 1731 |
| Description | Details about how to use the dial - how to find the hour of the day and of the night - how to find the right ascension of the stars or sun
Original figures in text
Read to the Royal Society on 9 March 1731 |
| Language | English |
| Extent | 6 sides |
| Format | Manuscript |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedMaterial | See RBO/17/7 page 27 for Richard Graham's account of constructing such a dial |
| RelatedRecord | CLP/3ii/33 |