Hi guys

Just recently purchased an Art Panorama 617. It seems to be a straightforward camera to use. The only issue I have the the focusing knob and the bellow.

The focusing knob has markings - 0.8, 2, 3, 5, 10m and infinity but it can be turned THREE times until the bellow is fully extended.

How would I know, without checking the ground glass, where I am focusing?

Can somebody please help, so that I don't have to waste film and experiment?

thanks a lot for your help in advance.