I felt that I could be a bit more original in this challenge by showing older technology. So here is the technology that every pilot must learn to use before they can get anywhere near digital flight planning equipment. And I always thought it was funny that the E6-B said "Flight Computer" on the top of it. You can even do calculus on these things.
Editting was bringing up levels just a bit. Adjusting contrast with curves. And a very slight warming of the colors with color balance. Sharpened after resizing.
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