Nikon PS-4 Slide Copy Adapter (For PB4,PB5)
Slide Copying Adapter PS-4. Designed for use with the Model PB-4 Bellows for simple duplication of 35mm slides or film strips. Both cropping and horizontal/vertical directional shifts are possible. When not in use, the bellows is folded into the adapter unit. It is kept in place out of sight with a magnet to protect it from damage. The PS-4 is also usable with the PB-5 bellows.