Is it a question of how to use this analyser, or just this is your first analyser, and you are not sure how thay work overall?

Besalar made/marketted a slew of analysers, and the more sophisticated ones allowed more than one 'personality' to be stored. Some times electronically, and sometiems just as multple gangs of potentiometers that could be bank switched in and out of the bridge balance circuit.

Are you interested in using this for color negative to print RA-4 process work, or as a general b&w darkroom tool?