Series/Collection Details
| Series: | Specimen of the triangulation of Great Britain with distances in feet and miles |
| Date: | n/a |
| No. held by RSGS: | 1 |
| Parsons Code: | C18 |
| Series: | Specimen of the triangulation of Great Britain with distances in feet and miles |
| Date: | n/a |
| No. held by RSGS: | 1 |
| Parsons Code: | C18 |