BS 2457:1954 PDF Download
$151.00Protractors for drawing office use
standard by BSI Group, 04/21/1954
BSI Group
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Protractors for drawing office use
standard by BSI Group, 04/21/1954
Specification for protractors for drawing office use
standard by BSI Group, 01/31/1975
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standard by BSI Group, 04/28/1954
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standard by BSI Group, 04/01/1954
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standard by BSI Group, 01/31/1986
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standard by BSI Group, 12/31/1990
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standard by BSI Group, 04/28/1989
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standard by BSI Group, 03/30/1954
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standard by BSI Group, 10/24/1963
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standard by BSI Group, 07/31/1969
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standard by BSI Group, 03/29/1968
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standard by BSI Group, 10/31/1980
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standard by BSI Group, 04/15/1954
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standard by BSI Group, 06/15/1994
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standard by BSI Group, 11/15/1995
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standard by BSI Group, 04/15/1954