We had a situation where our client insisted everything had to be dimensionend in Imperial Units, but this was for the military and at the time they insisted everything had to be dimensionend in Metric Units, so we had to submit two sets of PDFs, one with each, so my first useful code (code has been lost as well) would draw two copies of all dimensions on separate layers, one would be Imperial Units and one would be Metric Units, then we could freeze off whichever we didn't need. Now I would probably have further automated it to make a PDF of each.