| Description | Twice daily observations of magnetic dip made on nine days during April 1842. Columns for date and time, thermometer, result from 1st arbitrary pair of azimuths, result in the meridian, result from 2nd arbitrary pair of azimuths, and mean of the three results.
Headed: 'Observation of the Dip of the Needle taken at Madras during the month of April 1842. Needle Robinson's new No.2'. Signed [p.1]: 'S.O.E. Ludlow Supt Magl. Observatory'. |