In placing interpretive labels, especially large ones, you'd want to consider not just the average eye height but the field of vision. Your visual field reaches only 30 degrees above and 30 degrees below your eye height. The book "Human Dimension and Interior Space" says that from tall men to short women, eye height ranges from 56.3 to 68.6 in. (Seated eye height, i.e., for folks in wheelchairs, ranges from 28.1 to 33.9 in.) Judy Rand ([log in to unmask]) Rand and Associates 2584 Fifth Avenue West Seattle WA 98119-2271