I'm trying to avoid adding an extra hole in my converted keg kettle for a sight guage. Instead of having a tube indicating the level of wort, I'm wondering if you could just use a pressure guage?
This would entail adding the guage to the outlet and then adding water to the kettle in small increments to calibrate the guage.
I don't think a full kettle would add that much pressure so the guage would have to be "touchy" for small amounts. Maybe 10-20psi or something like that? What do you think?