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About This Item

 

Full Description

Explains the purpose and method of use of these charts for the visual assessment of the darkness of smoke emitted from chimneys.

Cross References:
BS 2742C
BS 2742M
Addendum No. 1 to BS 2742:1969


Replaces BS 2742:1958.
 

Document History

  1. BS 2742:2009


    Use of the Ringelmann and miniature smoke charts

    • Most Recent
  2. BS 08/30179078 DC


    BS 2742. Use of the Ringelmann and miniature smoke charts

    • Historical Version
  3. BS 2742:ADDENDUM NO. 1:1972


    Notes of the use of Ringelmann and miniature smoke charts. The calibration of instruments in Ringelmann number

    • Historical Version
  4. BS 2742:1969

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    Notes on the use of the Ringelmann and miniature smoke charts

    • Historical Version
 

Amendments, rulings, supplements, and errata

  1. BS 2742:ADDENDUM NO. 1:1972


    Notes of the use of Ringelmann and miniature smoke charts. The calibration of instruments in Ringelmann number