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4 Prisms for sale.
I bought these prisms from Massillon Plaque. They are J25 5" x 7" x 1.5" prisms. I was going to build a DIY lens for a constant height setup but I bought a lens instead. They work fine, but there are some reflections. You have to build a box or case to get the best results. You could have them coated to minimize reflections too. I am selling them for $100 CDN plus shipping for all 4 prisms. If you want to play around and see if constant height will work for you without sinking lot's of money on a lens, this is a good way to experiment and perhaps make your own lens
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