twin turbo,
Do you mean you cannot enter precise dimensions with Sketchup or DoubleCAD?
It's certainly possible with SketchUp, just type the dimension in as you are drawing (and the units if the dimensions are not the base units of your template) and the line, surface etc, will be made the size you type.
I have had a few goes with Sketchup over the last few years and never really gained enough knowledge to do anything reasonable with it, but over the last weeks, I have been drawing a few Roadster parts with it and after a few hours practice can now do some useful work with it. So I'd recommend Sketchup. Have a look at the video tutorials, (on YouTube or Google Sketchup site) each only lasts a few minutes and are very useful as you can just watch particular ones as you need them and as your skills improve.
eSteve
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Regards,
eSteve
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