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.
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.