Patent ID: 7495847

Claim:
A scope adapted to be mounted on a firearm, comprising: (a) a main tube, having a longitudinal orientation; (b) imaging optics in said main tube, including a reticle that is visible to a user looking through said scope and that has an apparent position relative to said main tube longitudinal orientation; (c) a reticle apparent position adjustment assembly, including a user accessible actuator, wherein when said adjustment assembly is in a first state, movement of said actuator causes said apparent position of said reticle to change relative to said main tube longitudinal orientation; (d) wherein markings are associated to said actuator and wherein one said marking indicates a zero position for said actuator; (e) an actuator disengagement mechanism, adapted to permit a user to place said adjustment assembly into a second state in which movement of said actuator does not cause said apparent position of said reticle to change relative to said main tube orientation; and (f) whereby a user may use said actuator in said first mode to move said apparent reticle position to a generally advantageous position, place said position adjustment assembly into said second state, move said actuator to said zero position and place said position adjustment assembly back into said first state, whereby movement of said reticle may be made relative to said generally advantageous apparent reticle position which has been set to correspond to said actuator zero position.