Templates, nomographs,stencils, etc

I don’t know of anywhere that sells them, but for a while I collected cardboard or plastic calculators like that and still have some of them. Most of them came from Ebay with a few from antique stores. I though I had a book on fabricating nomographs but can’t find it now.

My favorites are the P&W turbine calculator, Drefuss Humanscale table/seating guide, and the pilot’s circular slide rule calculator.

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Sometimes I forget that all the math has been done and we just need to know where to find it. Definitely some cools stuff there.

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