Measuring basketball players

I have long assumed that some of the official heights of basketball players are bogus. For example, I do not believe that Markquis Nowell is really 5-8. And do they measure the players in their bare feet, or in their shoes? I assume it is would be in their shoes, since that is how they play. Still, the roster is saying "He is 6-8," not, "He and his shoes are 6-8." And back in the days when black players wore 'fros, did they measure to the top of the 'fro, or press the ruler down to the scalp? It surprises me that more players do not wear their hair like that today, because there was a definite psychological effect to it.