| RefNo | AP/9/11/2 |
| Level | Item |
| Title | Unpublished diagram, equilateral triangle on brass plate by John Herapath |
| Date | 15 May 1821 |
| Description | Figure 1 showing an equilateral triangle engraved onto a brass plate, with a grid drawn across the triangle.
Subject: Physics
Written by Herapath in Cranford near London. Communicated by Davies Gilbert. Read to the Royal Society on 31 May 1821. |
| Extent | 1p |
| Format | Diagram |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |
| RelatedRecord | AP/9/11 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA8707 | Gilbert; Davies (1767-1839) | 1767-1839 |