2019 California Standards for Accessible Design Guide (effective January 1, 2020 with July 1, 2021 amendments)

11B-707.7.1 Visibility.

The display screen shall be visible from a point located 40 inches (1016 mm) above the center of the clear floor space in front of the machine.

11B.707.7.1.1 Vertically mounted display screen.

Where display screens are mounted vertically or tipped away from the viewer less than 30 degrees, the center line of the display screen and other display devices shall be no more than 52 inches (1321 mm) above the floor or ground surface.

11B.707.7.1.2 Angle-mounted display screen.

Where display screens are mounted tipped away from the viewer 30 degrees to less than 60 degrees from vertical, the center line of the display screen and other display devices shall be no more than 44 inches (1118 mm) above the floor or ground surface.

11B.707.7.1.3 Horizontally mounted display screen.

Where display screens are mounted tipped away from the viewer 60 degrees to 90 degrees (horizontal) from vertical, the center line of the display screen and other display devices shall be no more than 34 inches (864 mm) above the floor or ground surface.