See here:
https://i.ebayimg.com/00/s/NjgzWDEwMjQ=/z/m2sAAOSwo0JWLgPr/$_75.JPG
http://2.bp.blogspot.com/-i59fjHYjt5M/Vq6AkmGYgnI/AAAAAAAAHDc/Fs_Uflfd7TM/s1600/Regula+-+6.png
-) the round cut-out being twice indicates the plate to be alternatively mounted rotated by 180°
-) the two V-slits hint at a (very flat) arresting pin at a tripod being located in two different positions
However
-) the plate seemingly being fixed by rivests contradict my thesis of it intended to be mounted in two orientations
Any ideas what this plate is intended for?
https://i.ebayimg.com/00/s/NjgzWDEwMjQ=/z/m2sAAOSwo0JWLgPr/$_75.JPG
http://2.bp.blogspot.com/-i59fjHYjt5M/Vq6AkmGYgnI/AAAAAAAAHDc/Fs_Uflfd7TM/s1600/Regula+-+6.png
-) the round cut-out being twice indicates the plate to be alternatively mounted rotated by 180°
-) the two V-slits hint at a (very flat) arresting pin at a tripod being located in two different positions
However
-) the plate seemingly being fixed by rivests contradict my thesis of it intended to be mounted in two orientations
Any ideas what this plate is intended for?