Create a relative coordinate system

Discussion created by anzup on Apr 20, 2012
Latest reply on Apr 20, 2012 by mdenil
Hello, my name is Andrea, I'm just beginning to work with Arcgis. The software version I'm working with is 9.2
I would like to georeference a picture of an object placed on a 4x4 millimeters square grid. Is it possible?

I suppose I should tell the ArcMap the heigh and the length of the squares composing the grid, but I haven't maged to do it yet.

Thank you for the help.