The lens was made for Poraroid MP-3/4 (4x5 format) cam,
which was made for copying flat object like documents.

The register distance of these Tominon lenses looks like 50mm
by just roughly meassuring. If you have M42->E or Z adapters
all you need is 42->40mm step down ring for infinity focusing.
Of course you need an adapter with helicoid for general shooting
since Tominon lenses alone do not have the focusing mechanism.