RAILROADING 101
'(<a href="http://www.j-archive.com/media/2011-11-25_DJ_11.jpg" target="_blank">Alex delivers the clue sitting alongside some railroad tracks.</a>)  It can be narrow or standard, but in railroading, this term always refers to the distance <a href="http://www.j-archive.com/media/2011-11-25_DJ_11a.jpg" target="_blank">between the rails</a> of the track; standard is 56-1/2 inches'
gauge