Brand new in boxes, MOD54 processing device for 4x5 film, designed by Morgan O'Donovan in the UK to be used with Patterson Super System 4 tank, 3 reel size.
For those who may be unfamiliar with this inspired invention, the MOD54 allows for daylight processing in a light-tight, clip-style holder that can process up to 6 sheets of 4x5 film in the Patterson tank, using standard inversion processing.