angular mil vs dedo

angular mil

noun
  • A unit of angular measurement equal to 1/6400 of a complete circle. At 1000 metres one mil subtends about one metre (~0,98 m). Also 1/6000 and 1/6300 are used in other countries. 

dedo

noun
  • A traditional short Portuguese unit of length, usually about equal to 1.8 cm. 

  • A traditional short Spanish unit of length, usually about equal to 1.75 cm. 

How often have the words angular mil and dedo occurred in a corpus of books? (source: Google Ngram Viewer )