Endangered Art of Chaining Hub is for, Land Surveyors United members to discuss the Gunter's Chain and the endangered art of chaining in the land surveying profession. Share your best experiences and tips for chaining in land surveying.
Gunter's chain (also known as Gunterâs measurement) is a distance measuring device used for surveying. It was designed and introduced in 1620 by English clergyman and mathematician Edmund Gunter (1581â1626). It enabled plots of land to be accurately surveyed and plotted, for legal and commercial purposes. Gunter developed an actual measuring chain of 100 links. These, the chain and the link, became statutory measures in England and subsequently the British Empire.Open publication - Free publishing
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Justin,
The history of the Instruments that measure angles is also very interesting. There are several books that specifically relate angle measurements to Surveying, Astronomical and Nautical Instruments. A few are: "The Divided Circle  A History of Instruments for Astronomy Navigation and Surveying" by J.A. Bennett - 1987;  "Foundations of Mechanical Accuracy" by Wayne R. Moore ;  The Construction and Principle Uses of Mathematical Instruments" by M. Bion, Chief Instrument Maker to the King - 1709; "Time & Space  Measuring Instruments from the 15th to 19th Century" by Samuel Guye and Henri Michel - 1970,  etc.
The development of circular dividing engines and photoengraving is extremely important in the ability of instruments to measure angles accurately.
Have you ever considered that GPS instruments do not measure angles, they only perform trilateration measurements, then the angles are computed, not measured!
David C. Garcelon
what site can i get this book boss??
you may be able to just download it and print it out..otherwise you might be able to find it for sale on our Quick Shop under Surveying Books
nice one boss... i will make a copy for this so that i can add more books in my library in book of surveying.. ^_^