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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Parallax vs Focus
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<blockquote data-quote="Bart B" data-source="post: 1835918" data-attributes="member: 5302"><p>Name one whose instructions say to do that. Never heard of that. Physically impossible based on all the scope patent drawings I've seen such as the link in my post #76 in this thread. Not a requirement stated in Nightforce benchrest and competition scope manual.</p><p></p><p>All the mechanical drawings of such scopes show both lens elements move back and forth as the knob is turned starting anywhere in its range. Their lens mount has pins whose diameter is the same as the spiral slots in the outer tube that the adjustment knob twists. The lens mounts stay in position until the outer knob is turned. Those two lenses move.the same as the two lenses that change magnification on variable power scopes that don't have to be set to one extreme before changing it to another.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1835918, member: 5302"] Name one whose instructions say to do that. Never heard of that. Physically impossible based on all the scope patent drawings I've seen such as the link in my post #76 in this thread. Not a requirement stated in Nightforce benchrest and competition scope manual. All the mechanical drawings of such scopes show both lens elements move back and forth as the knob is turned starting anywhere in its range. Their lens mount has pins whose diameter is the same as the spiral slots in the outer tube that the adjustment knob twists. The lens mounts stay in position until the outer knob is turned. Those two lenses move.the same as the two lenses that change magnification on variable power scopes that don't have to be set to one extreme before changing it to another. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Parallax vs Focus
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