Unit Definition (etto [Italy]) The etto is an informal Italian name for the hectogram, a unit of mass equal to 100 grams or about 3.5274 ounces.
Unit Definition (keg [nails]) The keg [nails] is a traditional unit of weight for nails. A keg of nails weighs 100 pounds and thus has a mass of about 45.359 kilograms.
Weight/Mass 
