If you have Adobe Acrobat, you can set the page scaling to default to "None". You do this by bringing up the document properties (Ctrl-D or Cmd-D), then go to the "Advanced" tab and set the "Page Scaling" to "None":
You cannot set a default for the orientation.
This will not work if you have only the free Adobe Reader, you need Acrobat to set this value. Once set, Reader will use this setting.
Karl Heinz Kremer
PDF Acrobatics Without a Net
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