AS B73-1940
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Steel straightedges of rectangular section
06-03-2024
01-01-1940
Applies to steel straightedges up to and including 6 ft. in length, of rectangular sectiion, with both working faces finished straight and parallel, such as may be used on surface tables and for testing the alignment of machine tools.
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