Starship Dimensions website:
http://www.merzo.net/ If you click on the -2x link you'll have a page with the original enterprise in the left column and the Galactica is way down in the column that starts with Farscape ships.
Interesting thing: he lists the Enterprise, constitution class as 285 m and the Galactica at 610 m which is far short of what the article he links to which discusses the sources of the size confusion for the Galactica. I think that one ends up assuming the 6080 feet as the source for that length was John Dykstra. The scale discussion linked under the image of the Galactica is worth a read.
The hard part about scaling the Galactica is that she was done in the optical printer era and scaling individual model shots together is an imprecise product.
