Scope Lens Covers

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Bazooka Joe71

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I have a Burris Fulfield II 4.5-14x42 scope and for the past couple of hours I have been searching for flip up lens covers and have come up blank...

The ocular end is 1 5/8 inches in diameter and the objective end is 2 1/4 inches in diameter.

I want something like these, but none of these fit.

I would much prefer clear flip ups, but will take anything.

If anyone has a link to point me to, it would be greatly appreciated.
 
One thing I did when nothing fit one I had was to wrap electrical tape to build up the diameter until the next one fit. Not visible, or permanent and it worked.............

Tony
 
Alright, well after remeasuring, I need(according to butler creek) a size 19 and a size 40 and I'll be set...

Is there anywhere to get them besides butler creek? They are charging $13 for each of them, plus $10 S&H.(I want the clear ones("blizzard") BTW

The actual sizes are 2.24 inches(57mm) and 1.65 inches(42mm)
 
Midway had them for $6.99 last week. Try Google, they're not that rare an item.
/Bryan
 
Yeah I just found them...After I ordered from Butler Creek.

I sent them an email trying to cancel my order, but who knows if they will get to it before they ship them(probably not).
 
As the other fellows mentioned, the Butler Creeks are a nice product. Worst case you may have spent a couple extra bucks, but you probably won't miss it next week and you'll have what you want.

That's not too bad :)
 
I've been telling folks for years that these lens covers are the absolute cheapest best way to remove all of the effects of parallax error without the cost of an AO scope. And even with an AO scope they can really be made to aid you in a consistent hold.

The trick is to draw or otherwise make a circle of small enough diameter on the cover on the ocular lens (eyepiece cover) so that you can clearly discern the center of that circle in the exit pupil. I typically use 1/16" for an ID for this. Then, so long as you keep the crosshairs centered in the shadow of this circle, you know, with absolute certainty, that your eye is in the same place every time.

In reality what it does is to provide an exterior source of detectable parallax that allows you to avoid the errors from the internal undetectable parallax by consciously compensating for it.
 
I've been telling folks for years that these lens covers are the absolute cheapest best way to remove all of the effects of parallax error without the cost of an AO scope. And even with an AO scope they can really be made to aid you in a consistent hold.

The trick is to draw or otherwise make a circle of small enough diameter on the cover on the ocular lens (eyepiece cover) so that you can clearly discern the center of that circle in the exit pupil. I typically use 1/16" for an ID for this. Then, so long as you keep the crosshairs centered in the shadow of this circle, you know, with absolute certainty, that your eye is in the same place every time.

In reality what it does is to provide an exterior source of detectable parallax that allows you to avoid the errors from the internal undetectable parallax by consciously compensating for it.
What do you use to draw the circle, and how do you ensure that you draw it precisely on the center?
 
I've done it with a fine point sharpie. And it really doesn't have to be in the center. In fact it really needs to be in the center of the exit pupil instead, which may not be in the center of the cap.
So I line the scope up toward a fairly substantial light source, with a piece of matte tape on the inside of the cover so the exit pupil is displayed clearly on the inside of the lens cover. I used a round stick on plastic "dot" I ended up with from somewhere -though a drop of wax would do as well I suppose, in the center of the exit pupil. And I drew the circle around that. Then peeled the dot and tape off. The cheaper plastic lensed covers were easier, as I just drilled a hole through those, but the Butler Creek covers have what I assume is a glass lens. (I just realized that I have 3 of them done up this way and have never actually checked that I recall).
 
I've done it with a fine point sharpie. And it really doesn't have to be in the center. In fact it really needs to be in the center of the exit pupil instead, which may not be in the center of the cap.
So I line the scope up toward a fairly substantial light source, with a piece of matte tape on the inside of the cover so the exit pupil is displayed clearly on the inside of the lens cover. I used a round stick on plastic "dot" I ended up with from somewhere -though a drop of wax would do as well I suppose, in the center of the exit pupil. And I drew the circle around that. Then peeled the dot and tape off. The cheaper plastic lensed covers were easier, as I just drilled a hole through those, but the Butler Creek covers have what I assume is a glass lens. (I just realized that I have 3 of them done up this way and have never actually checked that I recall).

Would you mind posting a picture of the finished product?

Thanks
 
I wouldn't mind a bit...If I had some way to do it. :D
Not real sure what I'd have to do to get a black circle to show up against the scope lens. And flipped open, it would just look like a circle on a piece of glass.

In practice you can't really "see" the circle clearly anyways, it just provides a shading of sorts that forms a ring around the crosshairs. But just enough of one to be able to know when you are not centered.
 
In practice you can't really "see" the circle clearly anyways, it just provides a shading of sorts that forms a ring around the crosshairs. But just enough of one to be able to know when you are not centered.
How visible is it in low light?
 
It does tend to go away just a tad before the reticle does. Good question. I had to go dig one out and see about it though (indoors in a dim room). I've never used it in those conditions.
 
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