ents of the adjust the instrument to the level and to earth's magnetic force, is always partially the proper height, to bring the needles and may be wholly corrected by the to the same position as the needles of the globes and the Flinders bar. The heel- com pass -card, when the bowl is in its ing… … published originally by Captain Flinders Fiq.8 and Sir George i^irey. The correctors for the several parts of the compass error * are as follows : — To correct the "quadrantal error," a pair of unmagnetic iron globes (solid or hollow), fixed on each side of the bin- nacle. To correct the "…
Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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