Thread: using GPS as a rangefinder

my brandnew 2nd hand GPS unit arrived today.while having quick glance in users manual (no Im not gay LOL) I spotted a feature I didnt know existed.
if you mark waypoint and move curser on to another place ,it will tell you distance to that other point....
so if Im sitting on ridge/gully/anywhere really and animal is on feature I can spot on map...or another feature is on similar distance or halfway...or double the distance I can dead reckon distance by moving cursor onto that feature and seeing what GPS says.
probably something you lot already knew,but it sure as shite is news to me.
looking forward to learning how to make this thing work...having decent waypoints and trails saved etc