Really doesn’t answer my question of how to determine how deep it is maybe I’m not understanding their explination so basically I want to know is the gauge on the simplex useless or am I not understanding it like I said the gauge shows 2 bars for two coins one is 3 inches the other is 8 shouldn’t the coin that is 8” be 3 or 4 bars? Also like i said my at pro is dead on 2” Is very close I’ve never had it show 2”’on a target and dig 8” down?