I have always had the progressive kind only 2 times I was fitted that they gave me a bit of difficulty like navigating walking down steps.
Both times was my fault choosing a smaller lens -- made the magnification start too early and seemed like the steps were concaved, but with tilting head I could see.
Always got the glass lenses too because of working with grinders and such. Last few pairs have been plastic. Much more durable and don't chip like glass when using the grinder in most cases .
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
... [Read Article]
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