A sandwich board is a type of advertisement tool composed of two boards with a message or graphic on it and being either carried by a person, with one board in front and one behind in a triangle shape, hinged along the top, creating a "sandwich" effect; or set up next to a store advertising its goods. In this way, the advertising message can be read on both sides interchangeably.
A sandwich board is a type of advertisement tool composed of two boards with a message or graphic on it and being either carried by a person, with one board in front and one behind in a triangle shape, hinged along the top, creating a "sandwich" effect; or set up next to a store advertising its goods. In this way, the advertising message can be read on both sides interchangeably.
Source: Wikipedia "Sandwich board" · CC BY-SA 4.0
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