When we hear the words “pitot tube,” we tend to think more of airplanes than of air ducts, but [Franci Kopač]’s guide to pitot tubes for makers shows that they can be a remarkably versatile tool for ...

By Anjali Srivastava A peak flow meter is a handy, portable device that measures how fast air leaves the lungs. It plays a vital role in asthma management by helping users track their lung function ...