ianmacc Posted July 31, 2019 Share Posted July 31, 2019 Not a great picture but I have wondered what these are for a while. They’re on most platforms. This particularly filthy one is at Southampton airport parkway station. Link to post Share on other sites More sharing options...
IWCR Posted July 31, 2019 Share Posted July 31, 2019 Not a switch. I think these are a level peg for referencing rail height, possibly with some cant involved. No doubt someone Pway oriented will soon say how there are used. Pete 1 Link to post Share on other sites More sharing options...
Edwin_m Posted July 31, 2019 Share Posted July 31, 2019 It's known as a datum plate. The little slider is I think aligned with a line across the top of the rails and there are various figures related to track geometry. Helps to ensure the track is in the correct position especially next to a platform where trains scraping it is a bad idea but so are big gaps for passengers. 2 3 Link to post Share on other sites More sharing options...
RMweb Premium keefer Posted August 6, 2019 RMweb Premium Share Posted August 6, 2019 http://www.railsigns.uk/info/other1/other1.html Scroll down to fig.6 1 Link to post Share on other sites More sharing options...
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