The long side that fits on the bottom of sash is 2 3/4" long. It is 5/16" wide. The pivot is 1" long. The wider piece that screws to the side of the sash is 1" long and 9/16" wide. The marking on it says SELECT US.
Paul from SWISCO responded:
June 15, 2016
Please see our 26-357. The look and dimensions match, but what do you think?