nonius

Etymology
, the Latinised form of the name of its inventor, (1502-78), a Portuguese mathematician and geographer.

Noun

 * 1) A device for adjusting the accuracy of mathematical instruments, later superseded by the vernier.

Translations

 * Bulgarian: нониус
 * Catalan:
 * Finnish:
 * Galician: nonio
 * German:
 * Italian:
 * Portuguese: nônio, nónio
 * Spanish: nonius,