In German terminology, an adjustable wrench is called an "Englishman" everywhere.
Wikipedia (German) suspects that this term "Englishman" is historically derived from the fact that after nuts and bolts were finally standardized in the 18th and 19th centuries, the imperially standardized nuts could nevertheless not be tightened with the metric tool.
On the other hand, an "American" is (also) a very popular pastry with a sugar icing on the underside and it is called so in large parts of Germany.
