| RefNo | MA/348/11 |
| Previous numbers | MA.348 |
| Level | Item |
| Title | Notebook of vertical force magnetometer observations made at Colaba Observatory, Bombay [Mumbai], India, by [Arthur Bedford Orlebar] |
| Creator | Orlebar; Arthur Bedford (1810-1866); British mathematician and inspector of schools |
| Date | 6 December 1841-26 January 1842 |
| Description | Daily readings of horizontal changes to the Earth's magnetic field. Columns for time, observed reading, middle doubled, sum, mean, and remarks.
The notes are paper bound, the initial page [p.1] inscribed: 'Declination Magentometer 6th December 1841'. |
| Extent | 44p. [pp.2, 16-17, 20-21 blank] |
| Format | Manuscript |
| PhysicalDescription | Ink and pencil on paper |
| Dimensions | 159x110mm. |
| AccessStatus | Open |