Boiler (unit)

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Boiler was a measure of the weight of coal in the English mines .

1 boiler = 7 Metzen plus 10 Maßel (Wiener) = around 470 kilograms

literature

Jurende's patriotic pilgrim: business and entertainment book for all provinces of the Austrian imperial state: consecrated to all friends of culture from the teaching, military and nutritional class, especially to all nature and fatherland friends. Volume 21, Winiker, Brünn 1834, p. 446