I just thought of this idea and I wanted know if anyone had already done something similar or can think of a great way to make this happen.
Yesterday I went to my keg to draw a pint for my girlfriend and before I walked away I decided to gauge how much was left in the keg. I did this by seeing how light the keg was and estimating how much was left. I went back to my girlfriend and said "the keg is almost tapped, enjoy the beer before its out". "How can you tell its almost out?", she says, and thats when it hit me.
Can anyone think of an accurate way to measure the beer volume in our kegs?