Originally Posted by coyote
appreciate the reply.
reason I ask is...I bought "Designing Great Beers" and the author said to read the top of the meniscus.
New to brewing, but not to reading glassware, since I work in a lab. AFAIK, you always read the bottom of a (concave) meniscus. If you have a convex meniscus (ie old-school mercury barometer), then you read at the top, but beer/wort in a tube should always form a concave meniscus.