Category:Vernier

Ver"ni*er, n. Etym: [so named after the inventor, pierre vernier.]

Defn: 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. 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.