Jackofalldave

Hello, i just purchased a singer 112w110 also. I am looking for the tool that changes the stitch length. I can fabricate one as it has a piece of 1/4 square stock on the end and a thin, short wing to catch the indicator and turn it. Mine has the same indicator plate but serial is very clear to read. I’ll try to include pictures. Any help with information on the tool if available to measure so i can copy, would be greatly appreciated. Thanks, David