| RefNo | MA/251/29 |
| Previous numbers | MA.251 |
| Level | Item |
| Title | Magnetic observations at the Madras Magnetic Observatory, India, by Samuel Owen Edgar Ludlow |
| Creator | Ludlow; Samuel Owen Edgar (d.1888); British army officer in India |
| Date | 20 May 1842 |
| Description | Calculations of horizontal intensity at Madras [Chennai], using magnet no.X, with three pairs of distances.
Signed [p.1 and 2]: 'S.O.E. Ludlow' and dated 'Madras 8th June 1842'. |
| Extent | 2p. |
| Format | Manuscript |
| PhysicalDescription | Ink on paper. |
| AccessStatus | Open |