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david gregg wrote:
As for Japan the Jomon people predated the arrival of the Japanese, probably by millennia. Their stone 'circles' are based on classical megalithic geometry again familiar from Europe. I have analysed 4 of the largest myself. It is uncanny. The gods spoke to many peoples in the same geometrical terms
which they then used to define (and worship?) the movements of the Sun God!

Professor D P Gregg (retired)

You may be interested to know, David, that the standard (linear) unit of measurement in Japan (known as the shaku) is just a few millimetres short of our linear foot. Traditional Japanese architecture and crafts all use the shaku - from the thick tatami floor mats measuring 6x3 shaku (which then dictates the size of Japanese rooms, doors and walls) to the size of things like Japanese handmade paper which generally measures 2x3 shaku.

Unlike us dividing the foot into 12 the Japanese divide the shaku into 10, giving 10 sun to the shaku. This in turn is divided into bu, giving 10 bu to the sun. This in turn is divided into rin, giving 10 rin to the bu. This in turn is divided into mo, giving 10 mo to the rin. You can imagine how small this is by now (mo literally means a strand of hair).

Eeny, meeny, miny, moe (but perhaps that’s another story. :-)

Hello and thanks. Yes, metrics are intriguing. There are clear relationships between many. However for fun I always mention the Chinese units. The Shang bu was 1.005 m. The Zhou had a chi of 0.199 m later so 5 chi was 0.995 m and the bu was 6 / 5 m and so on. In modern times the British at Hong Kong standardised the local foot or chek as 14 and 5 / 8 inches or 14.625. However the Egyptian base building unit was the remen of 14.58 inches. Ironically when China metrified they defined the chi as 0.3333 m or 13.12 inches. This is very close to 2 ancient Shang chi of 13.18 inches but also to the Indus Valley foot of 13.1 - 13.2 inches and the Babylonian foot of 13 inches. Coincidence? Maybe, but 'idea stimulus diffusion' and trade may explain some ancient links. Myself, I suspect that some metrics were related simply because several cultures used scaled down geodetic measures...but that is a long and disputed story.
Prof. Dave Gregg