Ednalite Portrait Lens (+ Vitomatic IIa?)

[Procrasticus]

Hi, new guy here. I recently acquired an Ednalite Portrait +3 lens filter/magnifier/thing. It's part of size series VI, but I've got an adapter that lets me use it with my Vitomatic IIa, so I'm wondering-- can I even use this thing with my camera?

Thanks for the time.