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Need eyecups for vintage binoculars

I have 1970s vintage KMart Focal 7x50 binoculars with siam optics. The rubber eyecups have split and I need replacements. The cups fit over the housing which is 3.5cm or 1 3/8in.

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Posted on Jan 02, 2017

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SOURCE: Broken eyepiece, 1940s vintage 7x50 individual

Here in Melbourne, Australia I make these for people who need them. I also have a reasonable amount of stock generic ones. The question is not so much the size of the ring, but the thread size, the depth of the eyecup (depends upon the magnification) which sets your eye at the correct distance behind the eyepiece (eye relief) and the size of the central hole to suit the size of the eye lens. There would be other small engineering companies that could make one for you out of delrin.

Posted on Mar 03, 2010

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SOURCE: My Tasco model 440, 7 x 50 binoculars, 1980

You'll need to measure your eyepiece in "mm". Also determine if your eyepiece has an outer ring the eyepiece will slip over. You can find eyecups/guards on Ebay. Search under Binocular Eyecup or Binocular Eye Guard. There are also eyecups under "rubber eyecups/rubber eyeguards" but alot of these are for Microscopes and may not fit. You will need to pay close attention to the mounting type and measurements.

Posted on Mar 20, 2010

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SOURCE: need 2 rubber eyecups for redfield 10x50 binoculars #Y100754. they are green but i don't care about color if i can just find a pair.

i have the same bino's. did you find replacements?

Posted on Sep 02, 2012

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You can't.

Tasco optical products are very cheaply made items, usually bought direct from whichever factory already makes the same or a similar model and then Tasco have their badges and packaging added.

They are consumer grade models which are not designed with longevity or repairs in mind; they're worth little when new and almost without value as used items.

The only repairs which can be done are by Tasco themselves whilst their products are under warranty. Except for the most minor of repairs, a warranty claim will simply involve exchanging the faulty item for a new one as any labour expended in repairs will often cost Tasco more than the wholesale price of a new unit.

Your only fixes are to live with the missing eyecup; to visit a binocular repair shop (not exactly commonplace) and see if you can buy an eyecup which can be adapted by yourself to fit; or to replace yours with another pair. You'll usually find that there are plenty for free on your local FreeCycle or Freegle group but they'll often have the even worse fault of a broken eyepiece yoke. But the price is right so it doesn't really matter if you have to collect five or six pairs before getting a good pair...

With all due respect, 7x-15x35 are going to be optically atrocious, so replacing your current pair is not a bad idea.

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