Changes

=== Supplementary Units ===

=== Supplementary Units ===

The classical English system has at least three other units of length that are found in Elizabethan-era literature:

The classical English system has several other units of length that are found in Elizabethan-era literature:

* The ''fathom'' is the length of a rope held between two outstretched arms. It is defined as six feet. It may be used as a unit of depth at sea, but the usual unit of depth at sea is the foot.

* The ''fathom'' is the length of a rope held between two outstretched arms. It is defined as six feet. It may be used as a unit of depth at sea, but the usual unit of depth at sea is the foot.

* The ''rod'' is the length of a queue of sixteen persons. By convention, the rod is defined as five and one-half yards, or sixteen and one-half feet. 320 rods would therefore make a mile.

* The ''rod'' is the length of a queue of sixteen persons. By convention, the rod is defined as five and one-half yards, or sixteen and one-half feet. 320 rods would therefore make a mile.

* The ''furlong'' is one-eighth of a mile, or 40 rods. It is close in length to the Roman stadium, which was one-eighth of a Roman mile.

* The ''furlong'' is one-eighth of a mile, or 40 rods. It is close in length to the Roman stadium, which was one-eighth of a Roman mile.

== Area ==

== Area ==