Home›Browse›Ringelmann scale🌐EnglishEnglishDeutschEspañolFrançaisItalianoPortuguêsTürkçeالعربية日本語EntityQ7334848· pop 11· linked from 5 articlesRingelmann scaleSign in to savescale for measuring the opacity of smokeAvailable in 11 languagesEspañolFrançaisDeutschPortuguêsItalianoالعربيةCatalanTamilTürkçeUkrainianvia Wikidata sitelinks · CC0