The term machine tool first appeared in reports on the World Exhibition in London in 1851 [4. 108]; the German equivalent also first became commonly used in the second half of the 19th century. However, authors of German engineering textbooks, like Ferdinand Jakob Redtenbacher (1860), Julius Ludwig Weisbach, and Gustav Herrmann (1875) intially used it less often than French authors, who openly included machine tools among work machines. In 1846, Weisbach claimed “no essential difference” between tool and machine [3. 73]. The British distinction between hand tool and machine…