Patent ID: 8806798

Claim:
An adjustment device for a riflescope or other aiming device, comprising: a knob mountable on the aiming device for rotation about an axis to drive an adjustment member of the aiming device, the knob including a first bore and an opposite second bore each extending in a radial direction relative to the knob wherein the second bore is linearly aligned with the first bore; a removable indicator ring slidable onto the knob along the axis for mounting thereon, when mounted, the indicator ring keyed to the knob for rotation therewith; and a latch carried by the knob, wherein the latch retains the indicator ring on the knob when in a latched position, and wherein the latch is releasable to an unlatched position to allow the indicator ring to be moved along the axis and off of the knob, the latch including; a first retention pin carried by the knob in the first bore, the first retention pin extending radially outward from the first bore; and a second retention pin carried by the knob in the second bore, wherein the second retention pin extends radially outward from the second bore in an opposite direction from the first retention pin when the latch is in the latched position.