Convert si (Chinese) to thou (length)
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 thou (length):
Thou is an alternative name of mil. It is a unit of distance equal to 25.4 microns and it is used in Britain and the U.S.