Reading 1 lb higher than my other gauge. Maybe I have another sensor low? Who knows? Important as the gauge reads 0-20psi. Works as it should. In fact, it holds the reading until you let go of it. It is difficult to find a quality low pressure tire gauge these days. So I ordered a pair. This one seems to be the best so far. Revain sent this in a box with other items and used NO packaging material. This broke the packaging. I'm happy I received it safe and sound.