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a method of surveying in which distances are read by noting the interval on a graduated rod intercepted by two parallel cross hairs (stadia hairs or stadia wires) mounted in the telescope of a surveying instrument, the rod being placed at one end of the distance to be measured and the surveying instrument at the other...
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dictionary.reference.com/browse/stadia%20hairs
dictionary.reference.com/browse/stadia%20hairs
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Ancient Greek units of measurement - Wikipedia, the free encyclopedia
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Ancient Greek units of measurement were built mainly upon the Egyptian, and formed the basis of the later Roman system. Generally speaking, standards of measurement within the ancient Greek world var...
en.wikipedia.org/wiki/Ancient_Greek_units_of_measuremen...
en.wikipedia.org/wiki/Ancient_Greek_units_of_measurement
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Ancient Roman units of measurement - Wikipedia, the free encyclopedia
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The ancient Roman units of measurement were built on the Hellenic system with Egyptian, Hebrew, and Mesopotamian influences. The Roman units were comparatively consistent and well documented. Mode...
en.wikipedia.org/wiki/Ancient_Roman_units_of_measuremen...
en.wikipedia.org/wiki/Ancient_Roman_units_of_measurement
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The metric system, originating in the French Revolution and propagated widely in the 19th century, has brought a dreary but convenient uniformity to units of measurement. ... The ancient Persian parasang was 3.25 to 3.3 miles, 30 Greek stadia. Any great accuracy in the size of old units is illusory unless a critical study...
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www.du.edu/~jcalvert/tech/oldleng.htm
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Stadia is based on similar triangles between the object, the focal point of lens, and the reticle of the instrument. This relationship is shown in Figure 1 ... In Figure 4, the geometric relationships of an inclined stadia measurement can be seen.
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surveying.wb.psu.edu/sur162/stadia/stadia.htm
surveying.wb.psu.edu/sur162/stadia/stadia.htm
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The measurement of the Sun-Earth distance, now called the astronomical unit (804,000,000 stadia, 1 stadion varies from 157 to 209 meter). ... The measurement of the distance to the Moon (780,000 stadia).
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www.juliantrubin.com/bigten/eratosthenes.html
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1. You have just completed taking a stadia measurement and obtained the following information: top reading = 6.32 bottom reading = 4.67 zenith angle = 83 20; A. What is the horizontal distance? B. What is the difference in elevation?
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www.calpoly.edu/~sgill/quiz8.html
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Field-deployable spatial positioning or measurement systems are provided for improved versatility, reliability and performance. ... 4874238 Method and device for measurement with laser beam October, 1989 Ochi et al.
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www.freepatentsonline.com/7064819.html
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55 gallon aquarium measurement ;
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compu-express.net/zltkn/gegcd/measurement.php
compu-express.net/zltkn/gegcd/measurement.php
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