Convert span to si (Chinese)
Selected category: length.
Definition and details for span:
Span is a traditional unit of length equal to 9 inches or 22.86 mm. A span was defined as the length of the span of a man's hand with fingers stretched out as far as possible. The name comes from the old English word "spann".
Definition and details for si (Chinese):
Si is a Chinese unit of length equal to 1/100000 chi (Chinese foot) or 3.33 µm.