Winters PET Series Steel Dual Scale Maximum Pointer Water Test Pressure Gauge with Polycarbonate Lens, 0-160 psi/kpa, 2-1/2" Dial Display, -3-2-3% Accuracy, 3/4" Female Swivel Hose Connection : Amazon.co.uk: Business, Industry &
Magnehelic Differential pressure gauge, range 0-500 Pa | Anything Air Handling