(under the class definition) Subject matter comprising means whereby a device for determining a line of sight relative to a remote point includes an optical element or reticle which is moved relative to the device in accordance with the relative velocities of the device and remote point.
(1) Note. This subclass includes in general sighting devices containing optical elements which move relative to the device as a whole for the purpose of tracking a relatively moving object and also optical elements or reticles which are moved in accordance with information obtained by tracking the object by means of moving the sighting device as a unit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
27, for optical devices which actually measure velocity.
