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2. Gunter's chain - Wikipedia

   en.wikipedia.org/wiki/Gunter's_chain

   imperial/US units. 1/100 Gunter's chain 7.92 in. metric (SI) units. 200 mm. Gunter's chain (also known as Gunter's measurement) is a distance-measuring device used for surveying. It was designed and introduced in 1620 by English clergyman and mathematician Edmund Gunter (1581–1626). It enabled plots of land to be accurately surveyed and ...

3. Roller chain - Wikipedia

   en.wikipedia.org/wiki/Roller_chain

   An example of two 'ghost' sprockets tensioning a triplex roller chain system. Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues. A bicycle chain is a form of roller

4. Chain - Wikipedia

   en.wikipedia.org/wiki/Chain

   Chain. A common metal short-link chain. Roller chains. A chain is a serial assembly of connected pieces, called links, typically made of metal, with an overall character similar to that of a rope in that it is flexible and curved in compression but linear, rigid, and load-bearing in tension. A chain may consist of two or more links.

5. Hudson River Chains - Wikipedia

   en.wikipedia.org/wiki/Hudson_River_Chains

   When completed, the 600-yard (550 m) chain contained iron links two feet (0.6 m) in length, weighing 140 to 180 pounds (64 to 82 kg). The links were carted to New Windsor, where they were put together and floated down the river to West Point on logs late in April. Including swivels, clevises, and anchors, the chain weighed 65 tons. For buoyancy ...

6. Chain (unit) - Wikipedia

   en.wikipedia.org/wiki/Chain_(unit)

   The chain (abbreviated ch) is a unit of length equal to 66 feet (22 yards ), used in both the US customary and Imperial unit systems. It is subdivided into 100 links. [1] [2] There are 10 chains in a furlong, and 80 chains in one statute mile. [2] In metric terms, it is 20.1168 m long. [2] By extension, chainage (running distance) is the ...

7. Link (unit) - Wikipedia

   en.wikipedia.org/wiki/Link_(unit)

   The link (usually abbreviated as "l.", "li." or "lnk."), sometimes called a Gunter’s link, is a unit of length formerly used in many English-speaking countries. In US customary units modern definition, the link is exactly of a US survey foot, [1] or exactly 7.92 inches or approximately 20.12 cm. The unit is based on Gunter's chain, a metal ...