11.2.1.1-6 Horizontal Viewing Angle for Important Displays

Displays that require frequent or continuous monitoring, or that may display important (e.g., alarm) information, should be located not more than 35 degrees to the left or right of the user’s straight-ahead LOS.

Additional Information: The preferred horizontal viewing angle is in the range between a minimum of minus 15 degrees and a maximum of plus 15 degrees. For workstations with multiple visual display screens arrayed in the horizontal dimension, this horizontal viewing angle may be expanded to a range between minus 60 degrees and plus 60 degrees for tasks where head rotation is allowed. 0700, 1472G