The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 148
inguished by the cardbeing attached to and rotating with the needle. A mark, the * lub-bers mark of the sailors is made upon the case. This is placedso that the line connecting it, and the axis of rotation of the card isexactly in a plane, passing through the keel of the ship. Thus STANDARD… … Fig. 109. Mariners Compass. mounted in gimbals, a species of universal joint, so as to be alwayshorizontal. (See Compass^ Spirit—Ghnbals.) Compass, Points of the. The circle of the horizon may be andis best referred to angular degrees. It has also been divided intothirty-two equiangular and named…
Electricity
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