I had a friend in college studying engineering. This was in the late 60's. He bought one of the 1st engineering calculators to hit the market. IIRC, he paid over $400. That was a bundle back then. Now you can buy a better one than he had for $20 and a MUCH better one for under $100.
I was using a slide rule at that time. I still have it here somewhere but I don't know if I remember how to use it.
