Does what it's supposed to do. The small dial size makes the numbers a bit hard to read in low light. Note that I received a Taprite brand rather the NADS brand in the photo, but that's OK.
I ordered to of these, one was effect, the other read about 25psi before I’d taken it out of the plastic wrapper. A quick adjustment and I got it to 0 psi. But what do you expect for $10. I’m not sure either of them are super accurate, but I’m sure I’ll learn where I need to set them for the carbonation I need in my kegs