Some kinds of nails, such as those used for defending the soles of coarse shoes, called hobnails, require a particular form of the head, which is made by the stroke of a die.
-- Charles Babbage
   
Charles Babbage   Name:
Charles Babbage
Type:
Mathematician
Nationality:
English
Birth:
December 26, 1792
Death:
October 18, 1871
https://www.nutquote.com/quote/Charles_Babbage