KELVIN COMPASS. A. B. — Quadrantal Correctors. C. — Clinometer. D. — Fore and Aft Magnets v £ blue, \ red), for reversal when necessary.
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https://paperspast.natlib.govt.nz/periodicals/P19080201.2.10.2
Bibliographic details
Progress, Volume III, Issue 4, 1 February 1908, Page 117
Word Count
20KELVIN COMPASS. A. B.—Quadrantal Correctors. C.—Clinometer. D.—Fore and Aft Magnets v£ blue, \ red), for reversal when necessary. Progress, Volume III, Issue 4, 1 February 1908, Page 117
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