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Title: Rail section tracing machine, London Midland & Scottish Rail [Go to resource]
Description: Rail section tracing machine, London Midland & Scottish Railway, "Walker" rail tracer, marked "ABTUS Made in England", instrument in wooden case. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: rail tracing machine Source: Science Museum Identifier: 1986-7174 Go to resource More Like this...
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