Convert point (ATA) to shackle (Britain 1949)
Selected category: length.
Definition and details for point (ATA):
Point (pt) is used by typographers and printers. In past, one point represented the smallest element of type that could printing machines handle. The ATA point is defined to be equal to 0.3514598 mm, or 0.0138366 inch. This unit is used on the island of the United Kingdom and on the American continent.
Definition and details for shackle (Britain 1949):
In 1949 the Royal Navy redefined shackle as 90 feet or 27.432 meters.