Re-Focus: This is one way to refocus an Agfa folding camera. If you're sure its out (in this case I am sure because the helical was stuck and I had to remove the cover to unstick the focus) you can respool the camera with wax paper between two empty spools. Then measure the distance to a focal object and focus the camera until that test object is in focus and reinstall the marked distance ring with the correct distance under the indicator arrow. Its pretty close I think. Suggestions welcome for other ways I can check this. This is the only one I have ever heard of.
