Reviewed By: A customer from Missouri on 12/25/06
Works good. Easy to install and accurate display. Mechanical guage means no batteries required. It relies on friction to hold it in place inside the cup that is screwed onto the top of the stem and is not a tight enough fit. Any small brush against the edge knocks it out so it is easily lost if you're not careful. We added a piece of double-sided tape to the back of it and that's helped.