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öltunna [Icelandic]

In Iceland, ? – 19ᵗʰ centuries, a unit of capacity corresponding to the Danish øltønde, = 136 pottar = 4¼ cubic fet, about 131.4 liters (34.71 U.S. gallons). Used for ale, flour, meat, oil, fish oil, tallow, soap, butter, etc. But note that the smjörtunna, for butter, is a unit of mass = 224 pund = 14 lýsipund.

Anonymous.
Handbók fyrir Hvern Mann. Third edition, expanded.
Reykjavik: 1906.

Page 21.

Anonymous.
Vasakver handa alÞýðu. Fourth edition.
Akreyri: Bókaverzlun Frb. Steinssonar, 1894.

Page 13.