BK sight gauge

[LKHA]

Is it possible to put a sight gauge on the BK say at about the 4.5 gall mark? this should cover all the boils and let you see the level without having to measure just a idea as I am getting ready to do a full weld up on my kegs.

 

[Weissbier]

I purchased mine from weldlessfittings.com and installed it as low as possible. When calibrating it, the minimum it would read was 4.5 gallons, so you are set. I measured out 10 gallons and it was 3/4 up the sight glass.