Handheld USB microscope opinions.

I also use mine for other things besides coins, looking at my welds, I've taken it outside and looked at insects, and I've also stuck it inside engine blocks and heads where you cant see much, or at all. I also have a problem with optics (telescopes, microscopes, cameras, rifle scopes) in that, I tend to close one eye and squit with the other , so I end up with headache, and I believe you are suppose to keep both eyes open, but I can't do it.

 

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