nonius

nonius读音音标

英 [\'nəʊnɪəs]

美 [\'noʊnɪrs]

nonius意思解释

n.

（计算尺等上的）游标；

英英释义

Nonius is a device, named in honour to its author and inventor Pedro Nunes (Latin: Petrus Nonius), created in 1542 as a system for taking fine measurements on the astrolabe which could largely improve its accuracy. Later on, it was adapted in 1631 by the French mathematician Pierre Vernier, to create the vernier scale.