Adding Imperial Units
=====================

.. code:: python

    >>> from PhysicalQuantities import imperial
    >>> l = 1 inch
    1 inch
    >>> l.cm
    2.54 cm

+------------+------------------+
| Name       | Unit             |
+============+==================+
| inch       | inch             |
+------------+------------------+
| ft         | foot             |
+------------+------------------+
| yd         | yard             |
+------------+------------------+
| mi     | (British) mile       |
+------------+------------------+
| nmi     | Nautical mile       |
+------------+------------------+
| furlong      | furlongs       |
+------------+------------------+
| acres            | acre       |
+------------+------------------+
| barn             | barn       |
+------------+------------------+
| tsp          | teaspoon       |
+------------+------------------+
| tbsp       | tablespoon       |
+------------+------------------+
| floz      | fluid ounce       |
+------------+------------------+
| cup              |  cup       |
+------------+------------------+
| pt               | pint       |
+------------+------------------+
| qt              | quart       |
+------------+------------------+
| galUS       | US gallon       |
+------------+------------------+
| galUK  | British gallon       |
+------------+------------------+
| oz              | ounce       |
+------------+------------------+
| lb              | pound       |
+------------+------------------+
| ton            | US ton       |
+------------+------------------+
| Btu  | British thermal unit   |
+------------+------------------+
| hp         | horsepower       |
+------------+------------------+
| psi  | pounds per square inch |
+------------+------------------+
| degF | degree Fahrenheit      |
+------------+------------------+