MP 100-021 WATER MANOMETER, Multi Tube, Air Pressure.

This manometer employs clear acrylic tubes with a common bottom chamber connected to an adjustable height reservoir. Pressure ports are at the top.

Range : 300- 450 mm. 
Number of tubes : 14 or as required.
Application   : Comparison of air pressures.
Net (unpacked) shipping dimensions WxLxH : 35 x 25 x 65 cm.