[happytappy]

I acquired and am playing around with an old Perlick Gas Blender. There are no instructions or model # etc. It has 2 dials and 2 sight glass guages that read from 0-50. Is this pressure psi or is this mix percentage. If it is pressure, would a 30 on the CO2 side and a 20 on the N side be a 60 CO2/40 N mix? Any Help ?

Beer is good