English: Three gimbals, forming a gyroscope, a device used to keep an instrument, eg a compass, level, free from any combination of pitch, roll or yaw. Typically used on ships & aircraft. The alternative is to float the instrument in a liquid.
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Three gimbals, forming a gyroscope, a device used to keep an instrument, eg a compass, level, free from any combination of pitch, roll or yaw. Typically used on ships & aircraft. The alternative is to float the instrument in a liquid.