Riflescope or other optical device with pivotable system erector

A riflescope or another optical device, comprising:

• a main tube to house a pivotable system erector, the pivotable system erector containing one or more lenses or other optical elements;
• an adjustment turret including an adjustment member, the adjustment member in contact with a first end of the pivotable system erector, the adjustment turret and its adjustment member operable to pivot the pivotable system erector about a pivot point associated with a second opposite end of the pivotable system erector, to move at least part of the first end along a path of movement through an interior of the main tube, the path of movement including at least a first point corresponding to a maximum angle of declination of the pivotable system erector, a second point corresponding to a maximum angle of inclination of the pivotable system erector, and a third point corresponding to no inclination, and no declination, of the pivotable system erector;
• a main tube to house the pivotable system erector characterized in that 1) it has a main tube mounting diameter of less than thirty five millimeters, 2) it has a longitudinal center line and a portion of the adjustment member protrudes into the interior more than a quarter of the way to the longitudinal center line, at said no inclination, and no declination, of the pivotable system erector, and 3) An interior of the main tube includes:
• a cavity section at least partially defining at least one cavity,
• at least one intermediary section located rearwardly of the cavity section, and
• an additional section located rearwardly of the at least one intermediary section;
• wherein the path of movement terminates at one end in a cavity of the at least one cavity, wherein a distance from the first point to the second point is greater than an interior diameter of the additional section of the main tube;
• the at least one intermediary section defining a top space or a bottom space wherein at least a portion of the intermediary section has an interior width that is greater than the interior diameter of the additional section;
• wherein when the at least part of the first end of the pivotable system erector is located in the cavity of the at least one cavity, a different part of the pivotable system erector is located in the top space or the bottom space of the at least one intermediary section.

A riflescope or another optical device, comprising:

• a main tube with a pivotable system erector, the pivotable system erector containing one or more lenses or other optical elements;
• and
• an adjustment turret including an adjustment member, the adjustment member in contact with a first end of the pivotable system erector, the adjustment turret and its adjustment member operable to pivot the pivotable system erector about a pivot point associated with a second opposite end of the pivotable system erector, to move at least part of the first end along a path of movement through an interior of the main tube, the path of movement including at least a first point corresponding to a maximum angle of declination of the pivotable system erector, a second point corresponding to a maximum angle of inclination of the pivotable system erector, and a third point corresponding to no inclination, and no declination, of the pivotable system erector;
• the riflescope or other optical device characterized in that:
• the portion of the adjustment member protrudes into the interior more than a quarter of the way to the main tube's longitudinal center line, at said no inclination, and no declination, of the pivotable system erector, and
• an interior of the main tube includes:
• a cavity section at least partially defining at least one cavity, and
• an additional section located rearwardly of the cavity section;
• wherein the path of movement terminates at one end in a cavity of the at least one cavity, wherein a distance from the first point to the second point is greater than an interior diameter of the additional section of the main tube;
• and
• wherein:
• a ratio of a main tube mounting diameter of the main tube divided by a distance from the longitudinal center line of the main tube to a horizontal surface of the adjustment turret (C) is not 1.498, or
• the main tube mounting diameter is less than thirty five millimeters.