Probably, it is display units that differ in PDF and DWG files. The conversion is carried out in millimeters with 1:1 scale. If the measurement units match, but the dimensions still differ, please download a free 30-day trial version of ABViewer and set the required scale with the help of the Relative scale tool (video tutorial). If you still have any problems, you can send us the original and converted files at info@www.frankbbs.net. We will check them and figure out what’s wrong.