| RefNo | MC/3/105 | 
| Level | Item | 
| Title | Letter from Colonel [Thomas Frederick] Colby, Ordnance Map Office Tower, to the Marquis of Northampton, President of the Royal Society | 
| Date | 11 August 1840 | 
| Description | Requesting the loan of Ramsden's Great Theodolite for the survey in Yorkshire and the progress of triangulation.  [Request granted by Council on 15 October 1840.] | 
| Extent | 2p | 
| Format | Manuscript | 
| AccessStatus | Open | 
| RelatedRecord | CMP/1/136 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA6963 | Ramsden; Jesse (1735 - 1800) | 1735 - 1800 | 
| NA3821 | Colby; Thomas Frederick (1784 - 1852) | 1784 - 1852 | 
| NA2272 | Compton; Spencer Joshua Alwyne (1790 - 1851); 2nd Marquess of Northampton | 1790 - 1851 |