Hi Matthew, I tested this with the latest version 1.5.2 and also with v1.3 and for me it works correctly, see the video below. Please upgrade to Tekla BIMsight 1.5.2 http://www.teklabimsight.com/downloads.jsp to see if you can measure face to face dimensions correctly with that version. Thanks, Heikki http://www.youtube.com/watch?v=ekgV2MJUJGg&feature=youtu.be