[CA Victoria]

I gleaned this idea from one of the Zenith Carb gurus.
It simplifies setting the float saving time by doing it off of the car. The shim gasket set I use has two thickness .015 & .030. I measured the desired float level (.625 + gasket thickness) and scribed a mark on the plastic bowl.
The apparatus out of the photo is a 1 gallon fuel tank on a test stand about 24” above the carb and a valve inline on the tubing.
........this may not be worth the time to set up if you are only doing one carb......