Analog Balometer Kit, CFM with 2 x 2 hood

The only analog capture hood in production on the planet|Three measuring ranges: 0 -250, 200 500, and 400 1000 CFM|The Alnor ABT Balometer is a high productivity instrument designed to quickly measure the airflow directly from supply diffusers and return/exhaust grilles. The ABT consists of a fabric hood, hood frame, support rods, and a molded plastic base which contains the analog meter and flow sensing manifold.
The ABT models are temperature-compensated to display a standard flow rate in CFM. Standard flow rate is defined as the volumetric flow rate at standard conditions of 70F (21.1C) and 14.7 psi (760 mmHg) barometric pressure.
For increased flexibility, additional hood sizes are available to fit interchangeably on the instrument base.