Here is my experience with RouteRuler so far:
I downloaded RouteRuler 0.2.2
I read README
I clicked on RouteRuler.bat as instructed. I was instructed to unzip the file.
Although it appeared to have already unzipped itself, I unzipped it.
A black window appeared informing me of a bad command or file name.
README informs me that I do not have Java properly installed, and that I can easily do it by following the instructions in README.
I quit here. I do not have the computer expertise to undo any problems that may arise from diddling with Java. I expect programs to work with what I already have in my computer. If I really needed the program I might be willing to keep going, but as this is an evaluation, and as I already have a couple of satisfactory map-measure programs, I’m stopping at this point.
When the program is ready to work right off the bat I'll give it another try.
I have had satisfactory map-measure experience with:
Street Atlas USA (http://www.delorme.com)
Terrain Navigator (http://www.maptech.com)
TopoUSA (http://www.delorme.com)
Accuroute (http://www.accuroute.co.uk)