This aluminum plate base can hold plates up to 122cm high, 80cm wide and 1cm thick.
At the bottom you can put a piece of paper in the plastic to give more information.
You can unscrew this foot at the bottom to open it.
Then you just screw it close to the thickness of the plate.
If you use 2 feet you can hold plates of 244cm by 122cm.
Easy to point people somewhere at a fair.