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FOR SIMULATION PURPOSES ONLY
With the gyroscope erected, deviation of the aircraft from straight and level is
shown by displacement of the pitch lines relative to the horizon line. Bank
angle is shown by the scale at the top of the instrument that is marked for 10°,
20°, 30°, 60° and 90° of bank.
Parallax errors are removed by rotating the left knob to adjust the position of
the centre “wings”. A toppled gyro can be recovered by pulling the knob
marked “PULL TO CAGE/PULL FOR QUICK ERECT”.
This aligns the gyro to the zero pitch and bank attitude relative to the
instrument case by means of mechanical cams thus the aircraft must be in
straight and level flight at 100 kts. before erecting the instrument.
The instrument remains accurate up to ± 85° of pitch and through 360° of roll.
Turn and Slip Indicator
This is a ball-and-pointer instrument in which a ball moves about the centre of
a glass tube to indicate sideslip. The pointer, connected to a gyroscope,
traverses a scale that indicates rate of turn, the markings denoting a rate one
turn of 3° per second.
The instrument is electrically operated and incorporates a warning flag that
appears when there is no electrical power supplied to the instrument.