MEASUREMAN 3-1/8" Dial Size, Digital Pressure Gauge, 0-100psi/bar/Mpa/Kpa, 1/4" NPT Lower Mount, 0.25% Accuracy

Bought this to pressure test gas lines. It was much easier to read than my analog pressure gauge.

This is a really nice precision gauge, that works well and so far seems reliable. But until I had it in hand, I didn't really appreciate how bigt this thing really is. Including the protective rubber boot it is over 3 1/2" in dimameter, over 2" thick, and over 5" tall (including the fitting at the bottom). I have no better gauge against which to check accuracy, so for now accept the accuracy spec as stated. But I have 2 issues with this unit: 1. It responds *very* slowly. It takes more than 15 seconds to get a stable pressure reading when given a pressure step. That makes it excessively slow to use for fine pressure adjustments. That's fine if all you need is an accurate reading of a stable pressure, but if you need to quickly adjust pressure very accurately you should probably pick a different gauge. 2. Changing batteries is a PITA. The battery compartment is on the back of the unit, covered by both a large round metal cover (secured with 3 screws) and the rubber protective boot. So to change batteries you'll typically need to dismount the unit, remove the boot, unscrew the cover (being careful not to lose the screws), change the batteries, re-install the cover (noting that the screw pattern is not symmetrical, so you have to orient it properly even though "top" isn't marked), re-install the protective boot, then re-mount the gauge. That's a LOT more work than it ought to be. I've modified the boots on both of my units as shown in the photo. On one I opened up nearly the entire back of the boot to allow removing & re-installing the metal cover plate without removing the boot. On the other I've permanently removed the metal cover, and cut a rectangular opening just large enough to easily remove & install batteries. The latter would not be acceptable in a high-vibration environment. I see no justification whatever for making what ought to be a very simple battery replacement operation so absurdly difficult. The battery compartment ought to be covered with a snap-open or single-screw cover accessible with the boot in place. But other than the slow response and the battery compartment stupidity, I really like this gauge -- enough so that I've bought two, and wouldn't hesitate to buy more for applications that can live with the slow response.

Description and pictured images show 0.25% accuracy full scale yet the unit I received while looks the same is listed as 0.5% full scale. Will work for but don't want to give 5 stars for false advertising. 0-100psi model reads in 0.1psi increments.

Arrived on time, works well and was perfect for my application of measuring water pressure at my house due to gravity feed from an elevated tank.

slow response is useless during diagnostics use. bad buy on my part. accuracy okay if response time not an issue for you

Pressure gauge worked as advertised. Unit came with batteries already installed. It was tough removing the rubber protective cover. Instructions were easy to follow. I installed this unit on my well water pumping system. May buy a future unit for my swimming pool pumping system.

It worked perfectly. No complaints. A couple of minor quibbles-the boot has to be removed to change the battery, which also has #0 screws, and it’s far to easy to change the unit while turning the unit on and off, so there’s wasted effort there. That said, this is one of the best gauges I’ve used—long battery life, very good temperature stability.

works very well for an inexpensive digital gauge.

Good and not so good...put it (0-100Psi) on a dead weight tester to check it and was pleasantly surprised by the accuracy (mine is better than stated spec) even at the bottom of the range. Was not impressed with the refresh/update speed though...painfully slow to reach/indicate the test pressure.

Just installed, looks and operates well so far.