I'm looking for a program to use for drawing things to scale. What I want to use it for is to design a front and rear panel for an amp i'm building so I need to be able to draw certain shapes (mostly circles) and print them out. I also want to be able to do custom shapes and also text. Normally I just use Sketchup for doing basic scale drawings, but this needs to have more of the photoshop type stuff in it as I will be creating decals with this to put on the amp. One program I found was InkScape, which didn't seem to work too bad, but definitely not as good as I would like. Free programs would be preferred, but open to others. I have access to Visio if that would do what I want?