I’m picking up this 1940s Delta grinder this weekend. Just curious, what’s the attachment on the left side used for? I came across a real similar one on an old Baldor grinder, but can’t find anything on what it’s for.
Actually, I might have solved this one. It looks like part of an edge tool grinding attachment, but it's missing most of the parts. I dug ups this picture of a Baldor unit: