Byers A4 Film Cutter  type_Continuous Lighting Fotodiox adapter for attaching M42

Fotodiox adapter for attaching M42 mount lenses to Fuji X mount cameras

plus a zippered front pocket for accessories

but sturdy

54 L is a short telephoto lens for the Mamiya 6 medium format rangefinder camera

This would be a pretty useful accessory if you wanted to use a Viso lens on a digital camera with an LTM adapter

Byers A4 Film Cutter &nbsptype_Continuous Lighting Fotodiox adapter for attaching M42The Byers A4 Film Cutter is designed for making single frame cuts of 35mm film. In good working order, with some cosmetic wear, and minor corrosion on a few screw heads. Manual or automatic advance. For some reason, the designers of this machine put the trigger button on the same side as the blade so do pay attention when in use.