Convert si (Chinese) to shackle (Britain 1949)
Selected category: length.
Definition and details for si (Chinese):
Si is a Chinese unit of length equal to 1/100000 chi (Chinese foot) or 3.33 µm.
Definition and details for shackle (Britain 1949):
In 1949 the Royal Navy redefined shackle as 90 feet or 27.432 meters.