[Trisquel-users] Are there easily measurable images of the earth with Trisquel Flidas?

[erbperbp]

I'm using Trisquel since about 18 months and I have used Trisquel Flidas  
almost exclusively during these last 7 months.
One of the things I mostly miss of my old operating systems is that with them  
I could use Google Earth with its ruler that allowed me to measure, almost to  
the inch, the distance between two points of the images it showed.
Is there any Trisquel Flidas compatible application that allows users to do  
the same?
Thank you in advance.