Digital Low Pressure Gauge with 1/4'' NPT Bottom Connector and Rubber Protector by Uharbour, 0.35-15 psi, Accuracy 1% .F.S.

Works good so far. Does what its supposed to do.

What a nice gauge! Even includes batteries. Super value.

Good product overall; checks accurate against other gauges, easy enough to read and updates quickly. However, it appears to allow a very slow leak. I have two of these (so sample size of two, not just a single gauge) mounted on quick-connects, allowing me to put them wherever I want in my air systems. When I leave either of them attached to my tank, it loses pressure over time (a few psi/day in a 20-gallon tank); by contrast, when either of my two analog gauges mounted on the same quick-connects are attached to the same port, the tank holds its pressure indefinitely. The analog gauges are also always-instantly-readable, where as these require pushing a button to turn them on, so for tank pressure monitoring these don't replace an analog gauge. If you're not using these in a static-pressure system, then they seem to be a good product.

Good upgrade to my tire checking routine, easy to read, battery life exceptional, has proven tough enough for the usual drops and bumps of home use.

Great digital gauge for my diy morrflate. So far very durable, no air leakage. Super simple and easy to use.

Fast shipping and item was as described.

Great deal. I used for my gas inspection where the inspector wanted a gauge that showed percentages of lbs. He signed us off on our gas test.

I really wanted these gauges to work - I purchased qty 11 of the -15 to +15PSI model. I tested these in a jig with a 0.25% FS calibrated gauge at various pressures. Good: Gauges were linear and accurate to better than 1% FS. Some gauges drifted more than others but within 1% FS. Bad: This was deal-breaker for me & I had to return them. Occasionally (~1 in 10 power turned on; LCD off -> LCD showing value) the gauge would ZERO (i.e., read 0.00) even though tank pressure was different. ALL gauges in test jig had same problem so it's likely to be an inherent flaw to the design (firmware bug). Buttons could not correct this issue, however I found that removing batteries and inserting them (with gauge still under pressure) would return gauge to read correctly! Reading reviews finds examples of others running into same issue: turn on gauge to find it reading 0.00 PSI. If you were to vary pressure in the tank (I was using regulator), it WOULD register higher values correctly and lower pressures as negative. Last 2 photos show the flaw in action. With system at some pressure (it didn't make any difference if 0.5 or 15), gauge would power on to 0.00 with nearby gauges showing correct pressure. I don't show this, but removing battery and putting back would restore gauge to proper operation & show system pressure (again). Photos show jig I used (manifold is mcmaster-carr part #6527N104) and pressures across 15PSI down to 0PSI.