The venier scale was invented in its moThe vernier scale was
invented in its modern form in 1631 by the French mathematician Pierre
Vernier (1580–1637).
Its use was described in detail in English in Navigatio
Britannica (1750) by John Barrow, the mathematician and historian. In some languages, this device is
called a nonius. It was
also commonly called a nonius in English until the end of the 18th century. Nonius is the Latin name of the Portuguese astronomer and mathematician Pedro
Nunes (1502–1578)
who in 1542 invented a related but different system for taking fine
measurements on the astrolabe(nonius) that was a precursor to the vernier. The French astronomer Jérôme Lalande (1732-1807) popularized the name of the
instrument as a "vernier" in his book on astronomy (1764).
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