Graphics Software with Scaling - (Jul/12/2014 )

I'm interested in creating a small image (5.5" x 1.5") depicting a ~6Mb portion of the dog genome - drawn to scale.  I'm interested in including genes and a "ruler" designating every ~500kb.  I thought this would be a simplistic task, but I've found that online bioinformatics software gives took much, while photoshop gives too little (doesn't offer self-scaling, from a GB file, etc).

Are there any programs out there that can utilize a sequence file from NCBI, generate a high quality image of a portion of that sequence file, that I can then open in photoshop and continue editing?

I'm looking for something like this - to scale, with a ruler.  I'd love the option of zooming in on fractions of the image, and going into more detail, but let's figure out how to bake the cake before we get into the icing.

Thanks!

Photoshop isn't the software you should be using for this - it is for digitally altering photographs and as such isn't great for drawings.  The program to use is Illustrator (or the any of the freeware versions like Inkscape), which are vector graphics drawing programs, and can draw things to scale.  Many genetics programs are able to output images in formats that can be read by vector graphics programs - this is usually in the format .svg (scalable vector graphics).  Personally I use ApE (A plasmid Editor) available for free from here, which will draw maps (annotate using features tools), that can then be saved in a either .svg or .eps formats by right clicking on the image.