Bottle bracket measurement

I know its a long shot but does anybody have these bottle backets and know where they came from???? ekstensive? and would you be able to tell me the distance between the two mounting holes on the bottom of the bracket? I don't have the cash for them right now and i need to make something temporary, but dont want a bunch of holes in my freshly smoothed floor. i figure if i know the right spacing i can build teh temp ones now and just swap them out later. thanks