It should be noted that the idea of these units being standardised is probably only somewhat true.
Often I am asked why some of us still use old imperial or old Japanese weights and measures. In some ways information is often recorded or given in these so it is a matter of relaying that information - the real usefulness of some of these things is that they relate directly to people and so are naturally useful measurements - they are ergonomic. The metre is currently defined as the distance traveled by light in a vacuum in1/299,792,458 seconds - not particularly relevant to a human… with the exception of engineers of course.
Bu 分 - 3.03mm
Sun 寸 - 3.03cm (10 Bu)
Shaku 尺 - 30.3cm (10 sun)
Ken 間 - 1.818 metres (6 shaku)
Jo 丈 - 3.03 metres (10 shaku)
Cho 町 - 109.1 metres (360 shaku)
Ri 里 - approx. 3.927km (12,960 shaku)
Often I am asked why some of us still use old imperial or old Japanese weights and measures. In some ways information is often recorded or given in these so it is a matter of relaying that information - the real usefulness of some of these things is that they relate directly to people and so are naturally useful measurements - they are ergonomic. The metre is currently defined as the distance traveled by light in a vacuum in1/299,792,458 seconds - not particularly relevant to a human… with the exception of engineers of course.
Bu 分 - 3.03mm
Sun 寸 - 3.03cm (10 Bu)
Shaku 尺 - 30.3cm (10 sun)
Ken 間 - 1.818 metres (6 shaku)
Jo 丈 - 3.03 metres (10 shaku)
Cho 町 - 109.1 metres (360 shaku)
Ri 里 - approx. 3.927km (12,960 shaku)