Don't pilots have them in the cockpit? Easier to calculate remaining fuel on a slide rule than on a calculator, because the analog nature gives a plausibility c

Don't pilots have them in the cockpit? Easier to calculate remaining fuel on a slide rule than on a calculator, because the analog nature gives a plausibility check. Wikipedia has an article: https://en.wikipedia.org/wiki/E6B https://en.wikipedia.org/wiki/E6B