Portable Self-Registering Magnetometers (1903)
| Created by: | Roald Amundsen |
| Date: | 1903 |
| Notes: | Published in Amundsen’s The North West Passage, Vol. I (London: Archibald Constable and Company, 1908), Vol. I, p. 90 |
| Created by: | Roald Amundsen |
| Date: | 1903 |
| Notes: | Published in Amundsen’s The North West Passage, Vol. I (London: Archibald Constable and Company, 1908), Vol. I, p. 90 |