3 ms·

> There used to be all sorts of cardboard "slide rules" that basically used slide rule-like principles to do calculations specific to some particular industry o

> There used to be all sorts of cardboard "slide rules" that basically used slide rule-like principles to do calculations specific to some particular industry or function Those are nomograms, and agreed - they're really freaking cool: https://en.wikipedia.org/wiki/Nomogram https://en.wikipedia.org/wiki/Nomogram

fsckboy 3y ago
>Those are nomograms, and agreed - they're really freaking cool: https://en.wikipedia.org/wiki/Nomogram https://en.wikipedia.org/wiki/Nomogram I'm going to start making these to help Europeans convert back to Imperial measures: no mo grams(tm)!
- toolslive 3y ago
  You mean not just Europeans, but more than 95% of the planet's population? (Also, I'm not sure I quite understand the semantics of "convert" used here)
  - msrenee 3y ago
    It's a pun. Nomograms - no mo(more) grams. A product that converts grams into another unit.
nyrath 3y ago
Technically, the ones with slides are called "perrygrafs" or "slide charts". https://sphere.bc.ca/test/perrygraf.html https://sphere.bc.ca/test/perrygraf.html Nomograms have no moving slides, they are static printed scales read with an angled straight edge.
xeonmc 3y ago
This intrigued me so much that I decided to make an interactive version: https://news.ycombinator.com/item?id=35528155 https://news.ycombinator.com/item?id=35528155