Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Good gauge
Review: The gauge was accurate, and easy to read. It came with a light if one wanted to hook it up. This is the poor man's way to gauge the health of an engine, and mpg. I would balk a little at the directions, which implies that if you hook up to some vacuum lines that are in use, that the vacuum reading may be inaccurate. It's only inaccurate for the millisecond when it's being used by the other device. For instance, if you hook up to the brake vacuum, when you apply the brake, you'll see the vacuum twitch. Other than the instructions not clarifying that, the gauge works as described.
