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 ...

If you’re looking for a staunch advocate of attitude flying, you’ll find none better or more evangelical than Wolfgang Langewiesche in his classic Stick and Rudder. His sermonizing on the importance ...

Description: This product is designed to alert users of low- or no-air conditions in pipes. The DAFA can monitor radon mitigation systems by detecting a loss of airflow in the pipe and providing a ...