How to calibrate the Leitz V35 Focomat Enlarger

[MadInBkk]

Hi,
Just got the Leitz V35 focomat Enlarger.
Do you know how to calibrate it.
Thank u very much in advance.
🙂

 

[Finder]

What is wrong with the collimation? (You want to collimate it, not calibrate it.)