Stay there and don't move

[Ben the Ignorant]

Hi!

My 8x40 has no click-stop eyecups, to avoid adjusting the eye relief I set it with O-rings. Protect the lens, clamp the binoc, slide the O-ring down a cone; if the O-ring has been stretched too hard and has to break, it will do so one or two days later, you'll find its corpse hanging around the eyepiece barrel. Otherwise these have been there for at least two years. I have no large O-rings left, that's why I'm showing this with a rubber band instead.

[Stu]

Ben, that sounds fascinating but I confess I have no idea what you are trying to achieve with this. Can you post a picture which shows the end result, or what problem it solves?

Thanks!

[BinocularSky]

Looks to me like he is putting O-rings beneath the eye-cup in order to limit how far it will twist down, in order that he can maintain it at what is, for him, the optimal position.

[Ben the Ignorant]

15 minutes ago, BinocularSky said:

Looks to me like he is putting O-rings beneath the eye-cup in order to limit how far it will twist down, in order that he can maintain it at what is, for him, the optimal position.

Exactly.

The added O-ring is there.

[Peter Drew]

I appreciate the problem and would suggest that one elastic band stretched over both adjustable eyecups is an easier solution, just tried it on my 10x50's and it works perfectly.  

[Ben the Ignorant]

9 minutes ago, Peter Drew said:

I appreciate the problem and would suggest that one elastic band stretched over both adjustable eyecups is an easier solution, just tried it on my 10x50's and it works perfectly.  

Yeah, but the O-ring looks more elegant and discreet.

[Peter Drew]

In the dark?   

[Ben the Ignorant]

22 minutes ago, Peter Drew said:

In the dark?   

You can let dogs chew your binocs if you don't care how they look; I prefer mine elegant.

[Peter Drew]

Hello Ben. Not criticising, it's just when someone comes up with a good idea like yours, the next logical move is to try and simplify it.  Cheers. Peter.