Review on MEANLIN MEASURE 0 100Psi Pressure Gauge，High Precision by Andrew Krishna

This gauge is easy to use and gives accurate readings. The soft case seems overkill, but it's nice to have this model and makes it a good choice for a gift. While the connector at the end of the hose rotates freely for ease of use, the other end of the hose threads onto the stem. . On first use I somehow accidentally managed to unscrew it! In the photos you can see three rings at the top of the stem. This is a threaded part so be careful not to twist it. Two tiny discs of plastic fell out, one black and one clear. I didn't even notice at first. In fact, the transparent one on the floor was practically invisible until I shone it with a flashlight. There was also some spring. Luckily I cleaned and put the discs back in and everything was fine. The dial is easy to read in the light. I assume it theoretically glows in the dark, but only if it's been "charged" with light for a while first, making this "feature" pretty much useless. On the other hand, who checks their tires in the dark?