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We use Adobe 3D as our translator to produce a 3D PDF file. Vitually ALL CAD Prog Data can be converted without having the respective license. All 3D-PMI(Text,Notes & GDT's) are automatically converted + all properties. With the specific Import configuration the 3D PDF can be converted to Step, IGES, Parasolid or VRML. So long as you have the Adobe Reader 8.1 the PDF's can be opened and read.
You can cut sections, add your own notes etc., measure, and, and, and.
Of cause! You can measure any distance, angles, diameters, etc. etc.
Once you have added the measure tool menu icon to your display(RMB "measure") you can measure or dimension as you require. Hope this heps.
One extra thing I forgot to mention oskwes.
To be able to measure or dimension in Adobe Reader you must activate the read/write functions for the reader in Adobe 3D before you save the document, otherwise it will remain as "read only" in your reader.