Mariner's Compass

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“The mariner’s compass is used on board ship; it consists of several magnetic needles arranged parallel to one another and attached to a card, which is mounted at its center upon the end of an upright steel pivot.” -Foster, 1921




Ellsworth D. Foster ed. The American Educator (vol. 2) (Chicago, IL: Ralph Durham Company, 1921)


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Small GIF

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