The later versions of the mount have scales for 50mm, 75mm, 135mm and 200mm, and there are versions with the scales in meters and others with the scale in feet. Any lens that fits, though, can be used on the same helical. One attraction of this design is that shorter lenses will focus very close on the helical.
There were other helicals for longer lenses. Komura made a set with 300mm, 400mm, and 500mm heads that came with a long helical called the Uni Helical II. Nikon also made long lenses with their own long helical, but theses are usually rare and quite expensive. If you can get one of these long helicals, you can adapt other long lenses to them, just like you can adapt LF lenses to the screw mount on the regular helical.