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Ringelmann scale · Vinony

EntityQ7334848· pop 11· linked from 5 articles

Ringelmann scale

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scale for measuring the opacity of smoke

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International Standard Book Number

digital object identifier

United States Geological Survey

New Zealand national rugby union team

American Society of Mechanical Engineers

Engineering News-Record

British Standards

Categories

1888 introductions Fuel technology Maximilien Ringelmann Scales Smoke

Sources

wikipedia.externallinksexternallink

What links here5 pages

air pollution measurement

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