| the small wheel contain ulrasonic transducers the send out sound waves used to inspect the rails while underway. |
| Date:
11/14/2009 |
Location:
Newton, MS Map  |
Views:
569 |
Collection Of:
 
Mick Nussbaum |
| Locomotives: |
Author: Mick Nussbaum
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| Picture Categories: RollingStock |
This picture is part of album: Sperry Rail Service #124 |