Review on Dwyer Magnehelic Differential Pressure Gauge 0-25-0-0-25 by Ben Boulanger

Does exactly what it should. I tried a digital device but they were mainly made in China and seemed cheap. Yes, it's a dedicated device that only measures one thing, but it does it very well. I also bought it to measure my pellet stove's draft to make sure my burn is perfect. This is a well made product and has everything you need to get the job done except the connecting hose/pipe.