| Ref No | DM1306/11/1/5/folio 38-39 |
| Title | Letter from William Jacomb to Isambard Kingdom Brunel |
| Description | Written from Millwall, London. The letter gives Brunel the results of three trials testing the proving strain of the chain cable giving the amount of pressure and the point at which the chain broke. A sketch on Folio 38 indicates how the chain links were damaged during the test. |
| Date | 30 July 1857 |
| Format | Manuscript volume |
| Extent | 2 pages |
| Access Conditions | This material is held at the Brunel Institute - please contact the Brunel Institute to arrange access. |