Mar 8, 2017
Margaret Ingels
(1892–1971) Mechanical engineer
In 1920, Margaret Ingels became the first woman to earn a professional degree as a Mechanical Engineer. She worked for most of her career at Carrier-Lyle—the heating and air conditioning giant. Working in their labs, she helped develop the Anderson-Armspach dust determinator, which became the industry standard for air filtration, and she invented the sling psychrometer, which measures air humidity and is still widely used today.
Number 207 in an ongoing series celebrating remarkable women in science, technology, engineering, and mathematics.
