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Title: Clinometer for measuring railway track grades [Go to resource]
Description: Clinometer, 'Abney's Level', used for measuring railway track grades, in fitted leatherette case, by Newton & Co., London, c. 1880. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: clinometer Temporal: 1880 Source: Science Museum Creator: Newton & Co. Identifier: 2001-7749 Go to resource More Like this...
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