The measuring increment is the interval between measuring points when forming the graph, not the point distance. The larger the measuring increment setting, the wider the graphic display. Generally, for instruments with a depth of 30-200 meters, the default measuring point increment of 10 is better. For instruments above 300 meters, the incremental value of the measuring point can be appropriately increased according to the detection depth of the instrument, such as 20 or greater. It is recommended to set the measuring point increment in an integer multiple of 10 for the convenience of recognizing the picture. The setting of the measuring point increment only affects the width of the graph, and will not affect the measurement accuracy of the instrument.