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. I saw a bunch of them when I was in the oil business.
Kitchen can be a little harder with Imperial because you're often switching between units like fractions of cups to tablespoons etc. Must say I've never thought of using a slide rule of which I have a number--and I do usually use grams for weight.
> 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
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)
Kitchen can be a little harder with Imperial because you're often switching between units like fractions of cups to tablespoons etc. Must say I've never thought of using a slide rule of which I have a number--and I do usually use grams for weight.