Convert shackle (Britain 1949) to parsec
Selected category: length.
Definition and details for shackle (Britain 1949):
In 1949 the Royal Navy redefined shackle as 90 feet or 27.432 meters.
Definition and details for parsec:
Parsec (pc or psc) is a unit of distance used by the astronomers. Parsec is defined as the distance at which a star would appear to shift its position by one arcsecond during the time in which Earth moves one astronomical unit perpendicular to the direction of the star.