I was wondering if there is a way to lock the radius circle on the screen so when I lift my finger it stays until I tell it to go away? My mac workbook uses a touch-pad and my fingers aren't all that stable... and I want to spend some time reviewing the results....
future wibni:
it would be really cool If I could measure the distance between two other points while the first distance is still up...but I'm sure you have greater priorities than enhancing measuring...