'Vernier' definitions:

Definition of 'Vernier'

(from WordNet)
noun
French mathematician who described the vernier scale (1580-1637) [syn: Vernier, Paul Vernier]
noun
A small movable scale that slides along a main scale; the small scale is calibrated to indicate fractional divisions of the main scale [syn: vernier scale, vernier]

Definition of 'Vernier'

From: GCIDE
  • Vernier \Ver"ni*er\, n. [So named after the inventor, Pierre Vernier.] A short scale made to slide along the divisions of a graduated instrument, as the limb of a sextant, or the scale of a barometer, for indicating parts of divisions. It is so graduated that a certain convenient number of its divisions are just equal to a certain number, either one less or one more, of the divisions of the instrument, so that parts of a division are determined by observing what line on the vernier coincides with a line on the instrument. [1913 Webster]
  • Vernier calipers, Vernier gauge, a gauge with a graduated bar and a sliding jaw bearing a vernier, used for accurate measurements.
  • Vernier compass, a surveyor's compass with a vernier for the accurate adjustment of the zero point in accordance with magnetic variation.
  • Vernier transit, a surveyor's transit instrument with a vernier compass. [1913 Webster]