pair of compasses vs setter

pair of compasses

noun
  • A tool for drawing accurate circles or arches, usually consisting of two arms joined at one end in such a way that the arms can be opened and closed; one of the arms is pointed at its free end while the other holds a pencil, pencil lead or some other implement for making marks. 

setter

noun
  • One who sets something, such as a challenge or an examination. 

  • A function used to modify the value of some property of an object, contrasted with the getter. 

  • The player who is responsible for setting, or passing, the ball to teammates for an attack. 

  • A long-haired breed of gundog. 

  • One who hunts victims for sharpers. 

  • A typesetter. 

  • One who adapts words to music in composition. 

  • A shallow seggar for porcelain. 

  • A game or match that lasts a certain number of sets. 

verb
  • To cut the dewlap (of a cow or ox), and insert a seton, so as to cause an issue. 

How often have the words pair of compasses and setter occurred in a corpus of books? (source: Google Ngram Viewer )