Hi NHRI, To set the grid spacing to 2.5mm x 2.5 mm I would first take a look at an example VI found at: http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B123AE0CBBB7111EE034080020E74861&p_node=DZ52038&p_source=External
This example uses property nodes to set the value of the x and y scale increments. The spacing of your grid will depend on how you set the x and y scale increments. In regards to changing the minor grid line from solid to dashed, there is no way to change to dashed. Have a great day! Brooks W. National Instruments
