| RefNo | MA/251/4 |
| Previous numbers | MA.251 |
| Level | Item |
| Title | Coefficients for reduction at the Madras Magnetic Observatory, India, by Samuel Owen Edgar Ludlow |
| Creator | Ludlow; Samuel Owen Edgar (d.1888); British army officer in India |
| Date | 1842 |
| Description | Values for use in reductions of data from the vertical and horizontal force instruments, and declination magnetometer, in use at the Magnetic Observatory at Madras [Chennai],
Signed [p.2]: 'S.O.E. Ludlow'. |
| Extent | 2p. |
| Format | Manuscript |
| PhysicalDescription | Ink on paper. |
| AccessStatus | Open |