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The duplex rule was invented by William Cox in 1891 and was produced by Keuffel and Esser Co. of New York. [ 16 ] [ 17 ] In 1881, the American inventor Edwin Thacher introduced his cylindrical rule, which had a much longer scale than standard linear rules and thus could calculate to higher precision, about four to five significant digits.
The company produced the 4139 Cooke Radio Slide Rule, designed in the mid-1930s by Nelson M. Cooke, of the Navy's Radio Materiel School, thousands of which were made. The K&E 4081-3 Log-Log Duplex Decitrig was a mainstay for engineering students and practicing engineers in the 1940s, 50s, and 60s. [ 8 ]
The New York State Department of Motor Vehicles (NYSDMV or DMV) is the department of the New York state government [1] responsible for vehicle registration, vehicle inspections, driver's licenses, learner's permits, photo ID cards, and adjudicating traffic violations. Its regulations are compiled in title 15 of the New York Codes, Rules and ...
Duties of the DMV include enforcement of state and federal laws regarding motor vehicles. Many departments have sworn law enforcement officers who enforce DMV regulations that are codified in state law. In North Carolina, for example, the DMV contains an element known as "License and Theft." Stolen motor vehicles are tracked down by "Inspectors ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 5 March 2025. New York vehicle license plates This article possibly contains original research. Please improve it by verifying the claims made and adding inline citations. Statements consisting only of original research should be removed. (November 2014) (Learn how and when to remove this message) New ...
William Oughtred (5 March 1574 – 30 June 1660), [1] also Owtred, Uhtred, etc., was an English mathematician and Anglican clergyman. [2] [3] [4] After John Napier discovered logarithms and Edmund Gunter created the logarithmic scales (lines, or rules) upon which slide rules are based, Oughtred was the first to use two such scales sliding by one another to perform direct multiplication and ...
It was around this time that engineering became a recognized profession, resulting in widespread slide rule use in Europe–but not in the United States. There Edwin Thacher's cylindrical rule took hold after 1881. The duplex rule was invented by William Cox in 1891, and was produced by Keuffel and Esser Co. of New York. [51] [52]
The Geniac brand cylindrical slide rule sold by Oliver Garfield Company in New York was initially a relabelled Otis King; Garfield later made his own, probably unauthorized version of the Otis King (around 1959). The UK patents covering the mechanical device(s) would have expired in about 1941–1942 (i.e. 20 years after filing of the patent ...