Vernier scale
Videos
A vernier scale, named after Pierre Vernier, is a visual aid to take an accurate measurement reading between two graduation markings on a linear scale by using mechanical interpolation, which increase
Vernier caliper scales; main at top, vernier at bottom. It reads 3.58 ± 0.02 mm by adding 3.00 mm (left red mark) on the fixed main scale to vernier 0.58 mm (right red mark). The main scale reading is that to the left of the zero on the vernier scale. The vernier reading is found by locating the best aligned lines between the two scales. The 0.02 mm engraving indicates the caliper's readability and is the "vernier constant" for this scale.
Vernier micrometer reading 5.783 ± 0.001 mm, comprising 5.5 mm on main screw lead scale, 0.28 mm on screw rotation scale, and 0.003 mm added from vernier.
Nonius (device)
Videos
Nonius is a measuring tool used in navigation and astronomy named in honour of its inventor, Pedro Nunes, a Portuguese author, mathematician and navigator. The nonius was created in 1542 as a system f
Vernier scale
…mathematician and cosmographer Pedro Nunes (Latin - Petrus Nonius, 1502–1578). In English, this term was used until the end of the 18th century. Nonius now refers to an earlier instrument that Nunes developed. The name "vernier" was popularised by the French astronomer Jérôme Lalande (1732–1807) through…
Pedro Nunes Nonius model