[FPeel]

I heard of someone using a small piece of shrink tubing with some holes punched in it, but don't know how reliable that is.

Art

That was probably me. I've been using a BJones lens insert installed on a USGI aperture with heat shrink for the past year and find it works quite well. I've worked out most of the gotchas and would be happy to post instructions if anyone is interested.

 

[FPeel]

...I ordered a new set from stickonlenses.com for less than $20. The brand name is Optx-20/20. Just like reading glasses, they come in various strengths.

That link didn't work. Did you by chance mean http://www.stickonbifocals.com/ ?

 

[FPeel]

How about this one. It works when I preview the post: http://www.stickonlenses.net/servle...ories?category=OPTX+20%2F20%3A%2B2.00+Diopter

That one works. Thanks for the info.

 

[FPeel]

I got around to taking pictures of a BJones lens mounted on a standard USGI aperture:

http://frankpeel.smugmug.com/Other/M14/15593150_zc4TA#1168308551_YWxU5

http://frankpeel.smugmug.com/Other/M14/15593150_zc4TA#1168308697_fzU2r-X2-LB

The pictures can be resized with the "View Size" menu that pops up when you put the cursor on the main image (the one on the right hand side of the window).

 

[FPeel]

Nice job. I think I see what you did, but let me make sure:

The cylinder of the shrink tubing is oriented vertically, and you punched a horizontal hole for the aperture opening. Is that correct?

That is correct.

The other option would be to orient the shrink tubing horizontal (so the two ends become the hole you are looking through), and you have to punch a hole on the bottom for the parture to fit in, but I think this option would be more difficult to do.

Interesting idea. I'll experiment a bit and report back.