Rich, the adapters I mentioned go directly on the drawtube. My wife's Unitron Phase BPH has a monocular head that I usually swap in for photography. No need for a trinocular head, although they're handy.

Cheers,

Dan

Now, what I want to be given as a gift -- any occasion will do -- is a Wild Photomakroscope with 35 mm roll holder and control box, any vintage will do.