Meaning of VERNIER in English

VERNIER

[ver.ni.er] n [Pierre Vernier] (1766) 1: a short scale made to slide along the divisions of a graduated instrument for indicating parts of divisions

2. a: a small auxiliary device used with a main device to obtain fine adjustment b: any of two or more small supplementary rocket engines or gas nozzles on a missile or a rocket vehicle for making fine adjustments in the speed or course or controlling the attitude--called also vernier engine

[2]vernier adj (1788): having or comprising a vernier

Merriam-Webster English vocab.      Английский словарь Merriam Webster.