Much better than the guage my hand vacuum pump came with. FAR easier to read as well.

With the addition of some hoses, I was able to use this to measure car vacuum levels to diagnose a leak in my vacuum hose. Worked great.

Once I got the gauge it was sent out for CAL as all of these types of equipment are required to have calibration, since its been used in various test and hasn't failed and continues to pass calibration. Good gauge for the price.

Added this gauge to a Dewalt torpedo heater to set proper air pump pressure. Works perfectly!

Good product, but the fitting size is not 1/8 inch as advertised. It is 1/4 inch. This is why I only gave it 4 stars. Had to use an adaptor from 1/4 female to 1/8 male. Gauge works well for my application.

I put this gauge on my car's fuel rail test monitor fuel pressure and it works great and seems well made, I'm very impressed with the quality for what I paid for it. The gauge isn't listed as vibration resistant, but it's still working fine over 1000 miles later and doesn't bounce too bad from the engine vibration. Also, this gauge is very quick and responsive to small pressure changes, which can be good, bad. or indifferent depending on your application.

I use this pressure gauge to easily detect leaks on my house supply propane lines. I detected several leaks, including one of the final leaks originating from a faulty second stage regulator. The gauge is housed under and within the 500 gallon cover, covering the first stage regulator and main shut-off valve. The reason why I opted to install a pressure gauge on the tank, so that I can more easily perform pressure checks versus constantly connecting a more sensitive water column pressure gauge via the test ports of the regulators and appliances. Although the water column gauge is more accurate and reading differences are readily noticed, connecting the water column gauge is extremely tedious! (ie. I have referenced a more sensitive Dywer water column gauge below.) Using the WInters PEM pressure gauge, I can check for leaks any time and without hassle. The only problem, the gauge creates an additional possible point for leaks.Additionally, I also detected a leak on yellow PVC wrapped flexible copper line which had no evidence of kinking or bending, and being new and uncoiled! This leak was easily detected by simply applying soapy water or leak detection fluid at one of the ends where the yellow PVC wrapping was removed. However, people have to first realize such PVC wrapped copper lines can still leak even though wrapped within the yellow PVC, and then to simply apply the soapy water to one of the ends to detect the leak.I installed this pressure gauge on my 500 gallon prone tank just after the first stage regulator, which is also just after or before the main shut-off valve on the 500 gallon propane tank. (Should be about nine to 10 PSI.)* Always contact a local installer or service company, if you do not know how to work with propane and other flammable gases. Also, local codes may prevent you from working on any of your propane lines, and/or require a permit before doing so!To test for propane leaks:1. Shut off or close the valves nearest the propane appliances.2. Pressurize the supply line using the main valve on the propane tank, and then close the valve. Write down or take notice of the reading on the gauge. (The line is now pressurized, in between the source tank and appliances, with the tank and appliances turned off.)3. After one to two hours or even four hours, check the reading on the gauge.4. If there's any difference, then you have a leak.5. If there is a leak and you are unsure of the leak's location, you can further narrow the location by closing or opening additional shut-off valves. If you do not have additional valves, you can install additional valves. Also, you can use a Dwyer 2015D 6685-01-539-2345 at the additional ports of your first and second stage regulators, as well as on the appliances to check for leaks. The Dwyer 2015D (ie. ) or a water column pressure gauge is more sensitive and can further narrow the location of smaller leaks. Lines can also be pressurized with more pressure, however ensure all regulators and appliances are removed from those lines. Unless I installed the valves, I would not trust valves with excess pressure, as excess pressure can destroy regulators and appliance regulators! (Personally, I avoided using excess pressure on my lines, but the excess pressure does make finding leaks extremely easy with soap water.)Small or big leak?From Internet forums, a half pound to one pound difference after one to two hours is not a significant leak, however any difference is still considered a leak. And in my opinion, any difference is a leak. Copper flares and black iron pipes should not leak at all. On the flip, Propane companies tend to generally only be required to wait five to 15 minutes during this gauge checks, and may not care if the gauge only moves an insignificant amount.

I received the gauge via USPS (what a service organization)? The needle was off the gauge, for the price it wasn't worth the return. So I hit the cap OD with some lube and popped it off and put needle back on, so far so good. When I went to replace the clear plastic cover, it was completely opaque. The plastic was so cheap the mild solvents in the lube melted the finish. I have been buying from Amazon for many years and thought better of them.