This weekend while playing, our wizard found an invisible creature (detected with see invis) and when asked where it was by the party, the player started counting the squares to give an exact measure of where it was. The GM balked and said that this was not possible but they could give a general distance such as close range or about 50 feet. The party argued that this was easily possible to do in real life (IRL). Note, it is not easy for me personally but one person stated it was because I am not combat trained (several of them are military/ex-miltiary) and that the characters all are. After so many debates, I don't really go for "I can do this IRL answers" anymore, I prefer to have rules written (for or against, or going with GM call).
Are there rules given for characters being able to relay distances by exact feet or squares?
Note, I know the character must be able to tell because otherwise, spell casting ranges would be difficult to impossible. The key here is being able to relay exact distance, such as in this case where only one character could see the foe. I admit the player themself having to count the squares has made me skeptical.