On Sat, 26 Jan 2019 20:36:55 -0800, Jeff Liebermann
wrote:

I think you'll find one of these to be more suitable:
https://www.google.com/search?q=ohm's+law+cardboard+slide+rule&tbm=isch
Most of my collection:
http://www.learnbydestroying.com/jeffl/crud/Paper-Slide-Rule-Calculators.jpg
http://www.learnbydestroying.com/jeffl/crud/Paper-Slide-Rule-Calculators-02.jpg
Oddly, I don't seem to have one that does Ohm's Law.

This probably the best of the bunch:

"Ohmite Ohm's Law Calculator"
https://stevenjohnson.com/cardboard/images/ohmite-res-slide.gif
http://americanhistory.si.edu/collections/search/object/nmah_692574
I could swear I have one, somewhere, maybe. Wannit if I can find it?

Roll your own modern slide chart calculator:
https://www.datalizer.com

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558