## Metrology of a Bronze Age Dodecahedron

The Norton Disney Archaeology Group found an example of a “Gallo Roman Dodecahedron”. One of archaeology’s great enigmas,
there are now about 33 known examples in what was Roman occupied Britain.

## An Interpretation of its Height

The opposed flat pentagons of a regular duodecagon gives us its height, in this case measured to be 70 mm. Dividing 0.070 meters by 0.3048 gives 0.22965 feet and, times 4, gives a possible type of foot as 0.91864 or 11/12 feet**.

** Where possible, one should seek the rational fraction of the foot, here 11/12, over the decimal measurement which assumed base-10 arithmetic and loses the integer factors at work within the system of ancient foot-based metrology.

### The Simplest Likelihood

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## Geodetic properties of the Great Pyramid

A useful set of links to 4 recent posts about the Great Pyramids recording the length of different latitudes in the northern hemisphere. Further commentary will soon be forthcoming to better integrate these posts.

## Recalibrating the Pyramid of Giza

Once the actual height (480 feet) and actual southern base length (756 feet) are multiplied, the length of the 11th degree of latitude (Ethiopia) emerges, in English feet, as 362880 feet. However, in the numeracy of the 3rd millennium BC, a regular number would be used. In the last post, it was noted that John Neal’s discovery of such rectangular numbers to define degrees of latitude, multiplied the pyramid’s pointed height (481.09 feet) by the southern base length (756 feet) to achieve the length of the Nile Delta degree of latitude and, repeating Neal’s diagram relating the key latitudinal degrees of the ancient Model as figure 1, the Ethiopian degree is 440/441 of the Nile Delta degree. As shown above, the length of the 756 foot southern base is changed, when re-measured in the latitudinal feet for Ethiopia; it becomes the harmonic limit of 720 feet of 1.05 feet – normally called the root Persian foot.

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