Der is the top (slotted for screwdriver I assume) of the trigger adjustment screw supposed to protrude a bit or always lie below the surface? The threaded hole is extremely small and I would have to try and bend my smallest screwdriver or perhaps grind down a tiny Allen wrench to get in there. Perhaps the screw is missing as I can drop a wire a full 1/4" down the hole before it bottoms out.
I'm not sure, but "bascule" seems to be the same as what we would call the convex outer radius of the hinge or knuckle where met by the concave surface of the forearm iron.
