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.
pulgada
noun
A traditional Spanish unit of length, equivalent to about 2.3 cm.
How often have the words angular mil and pulgada occurred in a corpus of books? (source: Google Ngram Viewer )