BS 2742:1969 Notes on the use of the Ringelmann and miniature smoke charts (Withdrawn)
Publication Year
1969
Document Status
Withdrawn
Abstract
Explains the purpose and method of use of these charts for the visual assessment of the darkness of smoke emitted from chimneys.
Document History
Superseded by BS 2742:2009.
ISBN
0580055051
Publisher Information
British Standards Institution
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