You guys got me thinkin' (dangerous) about the distant past when slide rules ruled. I went digging around in my calculator drawer and found
a circular slide rule (from high school) my dad's very old wooden slide rule, three 6" mini slide rules??, my trusty log log decitrig that was a requirement to have hanging on your belt if you were a dedicted engineering student, and somewhere i have a cilendrical slide rule that if "unrolled"
woul be like 5 foot long (for greater accurcy). Then came my piece de resistance, my Curta mechanical hand cranked calculator which was a dream to use when I was on surveying crews. Then of course came the HP electronic hand held wonder that I have 4 different models of. jeese! Totally rediculous, except for the fact that I looked up Curta calculators online and the dang things are going for between 1000 to 2000 bucks! Thanks for making me dig into the collection!
one last thing I have to mention that I learned in high school:
As the animals left the ark, Noah told them to go forth and multiply. After some while, Noah happened upon two snakes sunning themselves. "Why aren't you multiplying?" Noah asked. The snakes replied, "We can't, we're adders."
So Noah and his sons went into the nearby forest and felled some trees. They made a platform of logs onto which they placed the snakes. You see, even adders can multiply on a log table.
Sorry