Will Bison and MI VHNTR: Thanks for the information. I do not normally use UTM, but I have decided to learn more about it. I am from the Lat/Long, feet, inches, miles, and chain generation.(1 chain = 66 feet). I was playing with my DeLorme Topo software and changed the units to UTM. I got a drop down stating that most UTM surveys are based on NAD27.