Series 400 Inclined/Vertical Manometers

Our most popular precision air velocity instrument, the No. 400 is used to balance air conditioning systems, measure pressure drop across filters, and test fan and blower discharge and inlet pressures, as well as air velocity in ducts. It offers the convenience of a dual purpose instrument - plus high accuracy on easy-to-read scales. A versatile, all around manometer for the air conditioning and balancing contractor or industrial plant engineer. Dwyer Durablock precision machined solid acrylic plastic construction. Virtually indestructible. Has both inclined section for high accuracy and vertical section for extended range. Velocity marked in red - from 400 to 10,000 fpm. Air pressure marked in black - from 0 to 10 inches of water column. Easy to read - no reference tables needed. Has screw leveling adjustment and ground glass bubble level.

Kit includes No. 400 Air Meter and all accessories: