adjustable for enlarging purposes

Full Title

Common details of photographic composing machines of the kinds covered in groups B41B17/00 and B41B19/00 > Film carriers; Film-conveying or positioning devices (film-handling means in line-composing photographic devices B41B15/32; machines with means for moving the film in its plane for photographing characters in succession B41B17/16) > adjustable for enlarging purposes