Measuring air flow in an HVAC duct can be a tricky business. Paddle wheel and turbine flow meters introduce not only resistance but maintenance issue due to accumulated dust and debris. Being able to ...

Peak flow meters are portable devices that are easy to use at home, in school, or on the go. They’re used to measure a person’s ability to exhale air forcefully out of their lungs. If you have a ...

It’s long been accepted that the smoother the surface, the lower the aerodynamic drag. That turns out not always to be the case.

Consider this: Engines don't burn just fuel, they burn fuel and air. The more air, the more power, and fuel delivery is adjusted accordingly...or so the axiom goes. In reality, air quantity must be ...