Ancient cultures knew about sacred geometry reflected in nature and derived their individual measures of length from it. Many       ancient writings suggest that this knowledge was given to mankind   by     god(s). The ‘Gods’ of certain cultures could be early post-flood       founders a few generations after Noah. In Egypt, building overseers required the Royal       Egyptian Cubit to be calibrated against a precision standard at      regular  intervals. Failure to do so was punishable by death.  This extreme respect for the royal cubit indicates an important legacy, like a standard handed down from the ‘Gods’.
According to the “Secrets of the Great Pyramid” (by L. Stecchini) the Egyptian measures of length, originating from at least the 3rd       millennium BC, were directly derived from the circumference of the  earth      with an amazing accuracy. On page 346, his claim is that the Egyptian       measurement was equal to 40,075,000 meters, which compared to the       International Spheroid of 40,076,596 meters gives an error of  0.004%. No consideration seems to be made to the question of, on purely technical and procedural grounds, how       the early Egyptians, in defining their cubit, could have achieved a       degree of accuracy that to our current knowledge can only be   achieved     with very sophisticated equipment and techniques.
Note: Egyptians calculated polar       radius as 12,000,000 Royal Cubits (of 0.525 m per cubit) which is       equivalent of 6300 km (modern value for the polar radius of the  Earth       is 6,357km)
The Sacred Cubit (aka Royal Cubit) was used in constructing buildings and monuments and in surveying in ancient Egypt. Royal Cubit consists of 28 units, digits ( 7 palms of 4 digits). The       names of divisions of royal cubit may suggest anatomical origin,       however the division numbers indicate astronomical origin of the  cubit      (7 days per week, 28 days lunar calendar, 4 weeks per lunar  month)…
Note: Here is an  interesting connection between modern and ancient units of length with astronomy and geodesy:  1 foot = 12 inches,  1 mile = 5280 feet = 63,360 inches = 4800 Sumerian Feet = 3200 Sumerian Cubits. 
There is great confusion today concerning metrology, the history of       measurement systems around the world. Beyond the child’s tales of  the      “foot” deriving from some king’s foot, measurement was    actually    part of a sacred system of knowledge established in    prehistory and   based  on timeless truths seen in the harmony of the    cosmos. Standards    of measure were everywhere framed    upon never-changing principles of    number, in particular, the    interplay of natural tension between ten and    twelve, and the    dimensions of the turning Earth. Except for   the  survival of    the English system in the U.S., most other traditional    systems of    measurement worldwide have succumbed to the “easy” and    modern, but    inferior “metric” system, which uses only ten, is divorced    from    nature and the human scale, and requires its users to conform to    the    measuring tools themselves, not to the nature of the objects       measured, as was traditionally done. 

The Cosmological Diagram (The New Jerusalem Diagram)

The Sacred Geometric Community has fallen short of the grand prize,       the New Jerusalem and her fullness of purpose, they have at least    seen,    especially through the apostolic efforts of John Michell, the    suburbs   of  the Holy City and from this afar view have come  imminently   close  to  her  profound and universal meaning; and  certainly by   framing their   quests  for universal understanding and  sustainable   social systems in   terms of  the Celestial City (or as in Plato’s case, Magnesia).  Their approach to the City Whose Builder and Maker is God (even though that “god” is NOT the One of revelation and authority held       by their antagonists amongst the aforesaid monotheists), as we  all,    is   seen through a glass darkly but, nevertheless, they are searching to unlock the mystery of the New Jerusalem and to confirm their findings through geodetic discovery.
Another version of the NJ Diagram is Magical Seal of Solomon.
In Medieval Jewish, Christian and Islamic legends, the Seal of       Solomon was a magical signet ring said to have been possessed by King       Solomon, which variously gave him the power to command demons, genies       (or jinni), or to speak with animals. In some versions the seal  was   made    of brass and iron, carved with the Name of God, and set  with   four    jewels. In later versions the ring simply bore the symbol  now   called the    Star of David (hexagram), often within a circle,  usually   with the two    triangles interlaced  rather than  intersecting.

To them the “geometric construction” of the New Jerusalem       presents cosmological realities which govern the universe – a universe       numerically understood far more by the “ancients” who  have    left   us a testament in their objects and writings to these  realities     whereby  John’s vision of the Holy City is the culmination  of all  their    most  vivid aspirations; to wit, the elaborate   geometric     configurations from the New Jerusalem Diagram to   intriguing planetary     measurements of circles, squares, triangles,   polygons of all sorts  which    provide immediate connectivity between   earth and heaven’s  realms – as well as those earthly objects   of antiquity which  replicate the    heavenly dimensions of Paradise,   and all within the  context,    preservation and accuracies of   antiquity:
“Another relic of the archaic tradition that produced these divisions       of time is our present system of measurement by units of feet,       furlongs, and miles, with the acre as the unit of land measuring.   Those      measures, which are still found the most convenient today,  were      canonized and held sacred, because not only do they relate  both to the      human and to the astronomical scales, expressing  the  unity     between macrocosm and microcosm, but they bring out the  same  numbers   in   the dimensions of the solar system as were given to  the  units of   time.”  — Dimensions of Paradise, Michell, p. 117.
One of the foremost metrologists of Teotihuacán is, without       equivocation, Dr. Hugh Harleston Jr., who during the late 1960s and       1970s measured this “ritual city” from a “…unified geometrical       composition whose intervals are clearly defined, and Harleston was soon       able to establish the basic unit of measure in its dimensions.   This      proved to be a unit of 1.0594 meters, which Harleston called  the      Standard Teotihuacán Unit (STU) or Hunab after the Mayan word, adopted by the Aztecs, for Measure.        He also recognized the geodetic significance of that unit:     1.0594063    meters is equivalent to the ‘Jewish rod’ of 3.4757485 ft.,    the same   unit  which represents the width of the Stonehenge lintels,  a     six-millionth  part of the earth’s polar radius and one part in      37,800,000 of its mean  circumference.” (Ref. The New View Over Atlantis, Dr. John Michell, 1995, p. 131).
Also:  “Harleston says of Teotihuacan’s builders: ‘When       they draw a line, they’re telling you an area. When they draw an   area,     they’re telling you a volume.  When they put volume, they’re   telling   you   time.”
Geodesy and geodetic placement of “sacred sites” of ancient       origins has long been affirmatively suspect – especially, the Great       Pyramid of Giza.  Geodesy involves a fundamental   understanding     of plane or solid geometry, astronomy relative to   latitude and    longitude  with latitude of more recent vintage since   ships-clock (cir.    1540) came  into vogue.   These geodetic or   geometric    relationships both on  earth and in the heavens are a   frequent haunt of    pagans and occultists  and of novel interest to   science –    though science with its  unfortunate proliferation   of skeptic is apt to    go off into “metric  tangents” and miss out on   all the “fun!” “For       quite some time researchers have been documenting the astronomical       alignments of ancient archaeological and megalithic stone sites  all   over    the world. But discovery of their geodesic alignment has  been   more    recent. Geodesy refers to the theory and practice of surveying to determine the position of specific points on Earth’s surface. It is distinguished from plane surveying in that it deals with areas       whose dimensions are so great that the curvature of the Earth must be       taken into account. Geometric geodesy involves the creation of a       mathematical model of Earth, while physical geodesy studies Earth’s       gravity field.  The discovery of the precise alignment of Mayan  sites      along the 90th parallel is significant because it  demonstrates that  the     Maya were aware of Earth’s curvature and knew  the advanced  formulas    used  in geodesy.
“For       quite some time researchers have been documenting the astronomical       alignments of ancient archaeological and megalithic stone sites  all   over    the world. But discovery of their geodesic alignment has  been   more    recent. Geodesy refers to the theory and practice of surveying to determine the position of specific points on Earth’s surface. It is distinguished from plane surveying in that it deals with areas       whose dimensions are so great that the curvature of the Earth must be       taken into account. Geometric geodesy involves the creation of a       mathematical model of Earth, while physical geodesy studies Earth’s       gravity field.  The discovery of the precise alignment of Mayan  sites      along the 90th parallel is significant because it  demonstrates that  the     Maya were aware of Earth’s curvature and knew  the advanced  formulas    used  in geodesy.
Note: Carl Munck, archaeocryptographer, introduces an ancient Pyramid Matrix,       in which ancient monuments – across the globe – encode their exact       positions with respect to latitude and longitude. The science of       decoding these monuments is called archaeocryptography. For  latitude,      ancient monuments were referenced to the same (modern)  equator. For      longitude, these monuments were referenced to a former  Giza, Egypt  Prime     Meridian – discovered by Munck – that ran from  pole to pole  across   the   Great Pyramid. 

PS1  The Forgotten Harmonical Science of the Bible
Note: The following segment is from “The forgotten harmonical science of the Bible” by Ernest G. McClain
“…but thou hast ordered all things in measure and number and weight” — Wisdom of Solomon 11:20  (1611 King James Bible)
Biblical creation “by measure, number and weight”  required God to       possess a fluency in arithmetic not always shared by the faithful.  And      so Bible arithmetic of the first millennium BC eventually  became      incomprehensible.
Today much of the astronomy, arithmetic, and music attributed to       Classical Greece is documented to Semitic Babylon in the second       millennium B.C.   Mesopotamian fluency in calculation–in the age of       Abraham, Isaac, and Jacob–already was 3000 years ahead of 16th century       AD Europe. Babylonian exile in the sixth century BC made accessible   to     the Jews anything not already known.
With help of Philo of Alexandria I am reading Divine prescience as pre-scientific musical insight encoded in tribal mythology.  Biblical       emphasis on twelve sons as eponymous ancestors of twelve tribes  who      build an altar of twelve stones concerns twelve idealized  “boundary      markers” in a cyclic octave needed for Davidic musicology. The pattern was long symbolized in the concentric circles of the Babylonian astrolabe,       adjusted monthly to correlate the watches with the varying lengths    of    day and night.  Figure 2 strips all star data from van der    Waerden’s    reconstruction, and converts his base-60 water-clock    weights (for full    watches in the outer circle, and half and quarter    watches in the  inner   circles) to base 10 arithmetic.

The astrolabe’s naked geometry and simple arithmetical doubling expose the idealist mind set which guided the evolution of Chaldaean sciences — converted to priestly ritual by Jewish ingenuity. Twelve       ideal months of 30 fictitious days were superimposed on the   heavens,     and the ratio of longest night to shortest day, known to be   about  3:2,    was computed as 2:1, so that only music offered a “manipulable” example which conformed to these rounded measures.
Concentric circles anticipate Ezekiel’s “wheel in a wheel” as the throne of heaven. Within each circle maxima and minima water clock weights of 2:1       anticipate the ratio of cyclic octaves. But equal weight differences       between successive months (reversing at the solstices in months III  and      IX) had to give way to proportional differences between  successive      semitones when this geometry was applied to music. Rational      tonal    arithmetic, cleverly mimed by Ezekiel, could  anticipate  this     conceptual equality only via a slight but  cumulative excess or      deficiency, for in a cyclic octave of ratio  1:2 all equal divisions  are     defined by irrationals. Thus the Holy  Land of a spiritual Israel  had   to   be conquered conceptually in  intricate warfare between the  excess   of   primordial “giants”  (products of 3) and the deficiency of  human     “weaklings” (products  of 5) among rational numbers, and  “weaklings” won     only with Divine  help in circumventing the lack of  real number. Bible narrative  brilliantly allegorizes every  aspect of Diophantine     approximation  to modern Equal Temperament, and  it does so with     exhausting respect  for numerical detail–making the Bible a priceless repository of tuning lore and its elementary number theory. The “unhewn” stones of Jewish altars are integers, meaning the natural       or counting numbers to which harmonical theory normally was     restricted,   although its calculation demanded great fluency with     reciprocal   fractions. From the perspective of any reference pitch all     integers   except 2n necessarily “sinned” by “missing the mark” to   some   degree   because octave doubling imposed, a priori, a universal   matrix   (“womb”)   tied to integral powers of 2. Problems arose     immediately with   division into 2 equal parts (requiring the square     root of 2) and 3 parts   (requiring the cube root of 2).
Sensory intuition always fails at some level of arithmetical subtlety where least noticeable differences create a Platonic “no man’s land” of uncertainty. Greek, Jewish, and Chinese cultures are unanimous in accepting the comma of 80:81 as its convenient normative value. It is the difference between a “giant” wholetone of 8:9 (worth 204 cents in modern logarithmic measure) and a “human weakling” of 9:10 (worth only 190). They are approximations to the sixth root of 2 worth 200 cents,       the value necessary to divide an octave 1:2 into six equal parts.    How    Davidic tuning theory reconciles this conflict becomes the    central   focus  of Bible allegory  And in the sixth century BC only God    could   have  solved this problem numerically–although any geometer    could map   results  to his own satisfaction for the astrolabe pointed    the way.
For musician/philosophers of Philo’s temperament,  tuning theory may       always have been a contest in the soul between the potential  tyranny    of  masculine intellection, considered mankind’s very highest power, and the relative benevolence of our feminine sensorium, where least noticeable differences create some measure of perceptual tolerance. Wisdom required a congenial mating between our own masculine concepts and       feminine percepts, and sometimes rewarded it with the experience of       transcendent beauty in “out of the body” adventures like Philo enjoyed       when listening to the antiphonal singing of segregated sexes in  his      Alexandrine synagogue. I am trying here to articulate Bible  harmonics   in    Philo’s spirit while paying closer attention to its   computational     logic.
http://blog.world-mysteries.com/science/the-language-of-god/