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Signal Aspects Ltd provides a design and build service in railway signal engineering, specialising in narrow gauge railway signalling equipment.
colour light signal  facing point lock  freddy treadle  motorised points  PLS signal  point and lock machine  point detection  point detector  point lock  points machine  points throw  signal arm  signal aspect  stock rail  switch rail  wheel flange sensor 
www.signal-aspects.com - 2009-02-10
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