US PATENT SUBCLASS 33 / 326
.~.~.~ Selective correction for deviation

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
318  DF  .~ Gyroscopically controlled or stabilized {5}
324  DF  .~.~ Gyroscopic compass {3}
326.~.~.~ Selective correction for deviation

DEFINITION

Classification: 33/326

(under subclass 324) Device provided with means to compensate for forces or disturbances causing deflection in the meridian seeking action of the gyroscope by presetting the compensating means to a desired position. Included in this subclass are adjustable means for correcting the readings of such compasses for errors due to the speed, course or latitude of the craft on which they are carried.

SEE OR SEARCH THIS CLASS, SUBCLASS:

356+, for correcting devices for magnetic field responsive indicators.