see post #6 indicating that added double 90░ offset, which enables use from standard tripod.
I see that AgX but it would be far too slow and fiddly in operation to be used in place of a Paramender to move the taking lens quickly 50 mm upwards to put the taking lens in the position of the viewing lens.
No, I had no TLR or Paramender in mind. As you indicated, it seems a tool to fix a camera (best SLR) to a tripod and fine-adjust height and lateral position.
(In contrast to the Kaiser version I linked to, which is differently mounted together.)