| RefNo | MA/348/7 |
| Previous numbers | MA.348 |
| Level | Item |
| Title | Notebook of horizontal 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 | 27 January-25 February 1842 |
| Description | Daily readings of horizontal changes to the Earth's magnetic field. Columns for time, observed reading, middle doubled, the sum, the mean, thermometer and remarks.
Front cover inbscribed: 'Horizontal Force Magnetometer'. |
| Extent | 38p. [pp.27-38 blank] |
| Format | Manuscript |
| PhysicalDescription | Ink and pencil on paper |
| Dimensions | 180x110mm. |
| AccessStatus | Open |