#unit-conversion

#unit-conversion

Before glowing screens and silicon chips, engineers used slide rules to design skyscrapers and send people to the Moon. Calculation meant moving a physical object, not tapping an app, and there was a certain clarity in that, a feeling that your hands and brain were in the same loop. Some of that intelligence at the fingertips is worth bringing back in a world that defaults to calculators for everything, even quick conversions.