I did read your post. And then was distracted by other posts, which are what I was reacting to. So I did not answer your question. Sorry if you felt I was aiming at you. I wasn't. I wasn't referring to anyone specifically. I take issue with recommendations for boosting kids' height when they aren't tall enough to ride. Any parent who see's their child in jeopardy (as I did) because they are on a ride that they are not tall enough for, is going to be more sensitive to this issue. I don't mean to suggest that I am a superior parent to anyone. I'm just one who has seen what can happen when the height restrictions are not followed by either those running the ride or the parents. It does give me a unique perspective. So I take it seriously. Not that I'm suggesting you or anyone else doesn't.
If your child is at the proper height, you shouldn't have anything to worry about regarding the rulers. When my DD was just tall enough at Disney, and was getting measured, she was always taller than the ruler. If you are really concerned that they may be measuring in an unfair manner, bring your own measuring tape with you to prove them wrong. I know it sounds crazy, but if your child is the proper height, you shouldn't have to contend with his disappointment if they are measuring improperly. And you are not the first person to question Disney's measuring accuracy.
And I am sorry if you felt like I was attacking your post.