I've been posting a lot of little projects lately in anticipation for a brew day this weekend (See Quickie Temp Controller
and Quickie Mill Funnel
), and this is looking to be the last of the ones I consider possibly interesting.
Since I'm able to see into my kettle during the boil, and I didn't want to bother with a sight glass, this was my solution. It's aluminum and detachable. The top of the tab marks gallon and the bottom of the tab marks half gallon.