Examples of Ringelmann chart in a sentence
Boilers shall be operated so as to give a smoke colour less than or equal to shade number 1 on the Ringelmann chart except during periods of start up.
Boilers shall be operated so as to give a smoke colour less than or equal to shade number 1 on the Ringelmann chart except during periods of start up and soot blowing.
The cost of schools is included within the County Council’s budget, but this funding is protected for that purpose only and therefore, cannot be used towards savings.
Smoke of a density equal to but not darker than No. 2 on the Ringelmann chart may be emitted for not more than three (3) minutes in any 30-minute period.
As dark or darker in shade as that designated as No. ½ on the Ringelmann chart as published by the United States Bureau of Mines.