Kowa TSN-PZ thread size. 52mm ? (1 Viewer)

Could someone confirm that the adapter I need to go between a TSN-PZ and a TSN-DA10 is a TSN-DA1- AR52 ?
I've got a TSN-DA1-AR46 for another setup but I need a similar adapter that screws into the TSN-PZ.
Nowhere can I find the thread size of this adapter (no specs on the Kowa site) but measuring it, it looks to be 52mm.
Many thanks if you can help.:t:
Robin

The scope side of the PZ threads directly to the 77x/88x series prism housing. The camera side is the standard T2 thread. An eyepiece/DA10 between it and the scope is not necessary and would not work anyway.

.............and I had not noticed the thread on the housing.
Many thanks
Robin