I've asked everywhere. Adobe forums, computing forums, CAD forums, Graphics forums, etc, etc. No help at all. I'm trying to scale a pdf (or any image ideally) to precise dimensions for printout.
For instance, using this image...
...there is a 39mm dimension at the 'throat' of that cone in the drawing. The original artist may, or may not, have scaled it appropriatly for printing. Every editor and graphic program I've tried so far only allows me to adjust the ENTIRE image. I have no way of knowing the dimension of the image from edge to edge since it's not specified in the drawing. I would need to print, measure with a wooden ruler, adjust scale, print, measure with a wooden ruler, adjust scale.... on and on. I'm looking for a utility that would allow me to click on one point, say one side of that 'throat' for instance, drag cursor, click on the other side, input cm into a box, save and print. Voila! No?
I think Adobe illustrator, for a lot of money and a learning curve, might accomplish what I've described. But it's such a useful feature on it's own for printing and scaling that it's hard to believe that it doesn't exist else where in a smaller, hopefully open source, utility.