A handy person from Ohio says:
July 27, 2016
This operator comes with a jog along the 4 7/16 " leg. Heading from the riveted joint, it can have a jog up, or jog down. I can't tell from the picture. Which way does the 39-031 part go.
Tom from SWISCO responded:
July 28, 2016
Hello! Are you referring to the offset? If so, ours goes down. You can see it in this video.