These were at the Chickasha Pre-War swap meet last week The adjustable has no teeth, I guess your thumb holds it where you want it.
The vise sure looks odd. The Cadillac drove up from Baton rouge. I talked to folks from Montana, Nebraska, Kansas, Minnesota, Wisconsin, Iowa and saw a guy wearing a San Diego Model T Club t-shirt. That t-shirt didnt stay, 40 degrees with a serious wind!