I used to have one of these from my Grandpa. . . never figured out how you're supposed to use it though. Interesting to read how they used it - I never figured it out.
I still have my K & E 4181-3 which I got in college in 1961.I used it for years afterward for simple multiplication and division. An elegant invention.
andrewrocheApr 26, 2008
Groan....
govatentApr 26, 2008
well played. i never read that one before
linuxpenguinApr 26, 2008
I used to have one of these from my Grandpa. . . never figured out how you're supposed to use it though. Interesting to read how they used it - I never figured it out.
jackalsclawApr 27, 2008
if you get logs then it should not be a problem to understand how to use them
hughvApr 27, 2008
I still have my K & E 4181-3 which I got in college in 1961.I used it for years afterward for simple multiplication and division. An elegant invention.
dteleApr 27, 2008
Wow !!!I can sell my two old rules and purchase the latest technology Mac and still have change to spare.thats progress for you.