from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several devices that measure oscillations
- n. A device that measures the roll (or pitch) of a ship
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument for measuring the angle through which a ship rolls or pitches at sea.
from The Century Dictionary and Cyclopedia
- n. A device for indicating and measuring the rolling of a ship. It consists of a motor-driven gyroscope mounted in gimbals, which maintains its absolute plane of rotation in space and, by the movement of pointers along scales attached to the frame, shows the angular departure of the vessel from the vertical.
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