Convert si (Chinese) to inch (survey)
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 inch (survey):
U.S. survey inch was defined on April 5, 1893 by Thomas Corwin Mendenhall, as a unit of length equal to 1/39.37 meters exactly.