I know this isn't the correct forum, but I also know that this forum is
full of well informed members and so there is a chance that somebody
might know the purpose of this tiny watchmakers tool.
The central brass 'spindle' is suported at either end with conical pivots
on adjustable screws. This spindle splits in two and where it splits it
has two round pegs which fit into corresponding holes, ( a wheel or
something other could be mounted at this point I suppose).
Above this brass spindle is a polished steel, tapered device which
is hinged and it has a blunt, rounded end.
Anybody like to have a guess, I'm at a loss.
Click on pic to blow up thumbnail.......