Wongm's Rail Gallery » Rail creep monuments

Punched hole on the side of the rail, used as the datum for rail creep measurement

In album: Rail creep monuments

More on the topic of rail creep and why track engineers need to measure it at http://www.railpage.com.au/f-t11346497.htm
Punched hole on the side of the rail, used as the datum for rail creep measurement

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Taken with a Canon EOS 350D DIGITAL
Date: January 05, 2009 12:18 PM
Exposure Time: 1/200 sec
Aperture Value: f/9
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