PIC GaugesLP1-254-5-0-15 Bottom Mount Dry Non-Fillable Low Pressure Gauge w/ Chrome Case, Brass Internals, Plastic Lens, 2.5" Dial, 5/0/15" wc psi Range, 1/4" Male NPT

I liked the look and feel of this gauge. However after sitting on a shelf in the box for 2.5 years I finally had a need for it. Hooked it up to my coffee roaster to monitor the gas pressure. used it for 3 roast days and it on the 4th day it completely stopped working. Gauge went to -3 and is unresponsive to any gas pressure change.

This gauge is perfect for checking evap systems it can measure vacuum and pressure so it can be use on any system to isolate where the leak is

I wanted to know the ullage pressure in my diesel fuel tank. The pressure/vacuum vent valve vents at 8 oz/in², and relieves vacuum at -1 oz/in². This equates to a high pressure of 13.85 inches of water, and a vacuum pressure of -1.73 inches of water. So this gauge had the perfect range to let me know if my pressure/vacuum vent valve is operating properly. It allows me to monitor vacuum while pumping fuel, and to see pressure rises in the tank during exposure to the daytime sun. I placed a decal on the top of the tank that has a table to convert from "Inches of Water" to "oz/in²".

The gauge is extremely sensitive and very accurate when compared to a fluid manometer. Easy to read. Well worth the money.

This seems to be a well made product. I use it to estimate the water level in a tank and based on calculations of pressure vs water depth it seems to be pretty accurate.

I needed a very low pressure gauge to do some calibrating and this one works just right. It came before estimated and was in perfect shape.

Bought 2, they agree within 15 %. Well made. Longevity unknown. Update a couple of weeks later: both failed.

First one was defective out of the box, needle pointed to 27 and no response to pressure or vacuum. Second one also junk. Do not order this product...you will be returning it.Junk.Spend a little more on a quality gauge, Dwyer Magnehelic Series 2000 Differential Pressure Gauge, Range 15-0-15"WC.