Where does this thermometer read at?

[griffinej5]

This is the thermometer I have in my aquarium. Perhaps I am just being thick right now (I give as my excuse that I am trying to put the finishing touches on my last project for my master's degree, I swear I am intelligent). For example, is that 40 read at the line it sits on top of,or somewhere else? I'm thinking my tank might be too cold for my goldfish.

 

[roundar]

Haha, yeah it's the line it sits on top of. Kudos on the degree at any rate.