I have a 2" tectron photovisual focuser, this is a uniquie system. It's a R&P with about 2" of travel for visual use. For photographic use the R&P conponet is removed and replacesd by a fine focusing helical focusing unit that fits standard T-rings to mount a camera to (T-ring not included).
It has a sightly curved base to fit a newt.
I'm not sure if I have a spare 2"-1.25" adapter but you can buy those for about $15 from several places. I'll sell it for $100 w/o the adapter and $115 if i come up with one. (plus shipping).
photos on request