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You can change the depth-range scale on the depth log. Increasing the depth- range scale allows you to view more variations in depth. Decreasing the depth-range scale allows you to view more detail in the variation. When the scale is set to Auto, the depth range automatically adjusts to display all the log values within the selected duration. 1. Select MENU > Depth Log Options > Scale. 2. Select a depth-range scale. echo 200, echo 300c, echo 500c, and echo 550c Owner’s Manual Viewing Pages Viewi