Cooke Magnetometer

Cooke Magnetometer (description below)
  • Manufacturer: T. Cooke & Sons Ltd., London, York, & Capetown
  • Serial Number: G11-30101

Background & Usage

Cooke Magnetometer No. 15 was first used by the Dominion Observatory for the magnetic survey of 1910. It was used until the late 1940s. The instrument was used for measuring both declination and horizontal intensity.