An abax was a table covered with sand commonly used by students, particularly in Greece, to perform studies such as writing, geometry, and calculations.
[8] The use of sand tables increasingly fell out of favour with improved maps, aerial and satellite photography, and later, with digital terrain simulations.
In 1991, "Special Forces teams discovered an elaborate sand-table model of the Iraqi military plan for the defense of Kuwait City.
Small fences of concertina wire marked the shoreline and models of artillery pieces lined the shore area.
Throughout the city were plastic models of other artillery and air defense positions, while thin, red-painted strips of board designated supply routes and main highways.