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Title: Aluminium permanent way callipers [Go to resource]
Description: Permanent way callipers, aluminium callipers for measuring thickness of rail with moving bar across reading on a calibrated scale. Stamped on bar "Geo W. Brown". 7 1/4"x5" License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: permanent way callipers Source: Science Museum Identifier: 1987-8463 Go to resource More Like this...
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