Convert shackle (Britain 1949) to foot (French metric)
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 foot (French metric):
In 1799 meter became the official unit of length in France. So French metric foot, or "pied metrique" was defined as one third of a metre and it was in use until 1837.