Interchangeability of Zeiss and B&L Series VII Protar cells?
Notwithstanding that one is probably Metric threaded and the other English, were they made such that they would be correctly positioned w.r.t. the aperture and the other cell if the threads were compatible? I have some of each (including some of the later Zeiss ones that were coated), and it would be nice to be able to use them together, even if it meant rethreading or making adapters for the cells of one manufacturer.
Bookmarks