[yarddog]

I took a slide rule class in 1967. I even bought a pretty nice plastic slide rule.

It was only a few years before electronic calculators took over.

[Ozark Tom]

Remember seeing an engineering calculator the size of a briefcase back in the 70’s. Ever run across something of like description?

[Aliska]

Our chem teacher made us learn to use a slide rule to solve I think it was Boyle's law. I don't remember using one to balance equations.

The slide rule is only accurate to a couple decimal places unless there is some trick like multiplying by 1,000, calculating, then dividing. I'm not sure that would work.

But I never liked the imprecision of decimals compared to working them by hand. My father used his all the way through college and beyond, so maybe there is a trick.

My slide rule, I went out one night in college and got rip roaring drunk. I came back to the dorm, and my slide rule fell in the toilet while I was throwing up.