Although the 1985 Weights and Measures Act^[4] expressly prohibited the use of the stone as a unit of measure for purposes of trade (other than as a supplementary unit), the stone remains widely used within the United Kingdom and Ireland as a means of expressing human body weight. People in these countries normally describe themselves as weighing, for example, "11 stone 4" (11 stones and 4 pounds), rather than "72 kilograms" in most other countries, or "158 pounds" (the conventional way of expressing the same weight in the United States).^[5]

http://en.wikipedia.org/wiki/Stone_(mass)

For the next point, let's go back to talking about feet. The singular is obviously foot, and the plural is usually feet, except when you are using it as a compound modifier. You would say that Squiggly climbed a tree that was 10 feet tall†; feet is plural there. But you don't say Squiggly ran up a 10-feet tree—you say Squiggly ran up a 10-foot tree. Foot is singular when it's part of a compound modifier. That's also true for other units of measure like inches and pounds. Squiggly was running from a 100-pound monster, and he nearly lost his 10-inch tentacles.

http://lamar.colostate.edu/~hillger/correct.htm

1. The short forms for SI units (such as mm for millimeter) are called symbols, not abbreviations.
...

4. Symbols always are written in the singular form (even when more than one is meant).
* RIGHT: 1 mm, 500 mm, 1 kg, 36 kg
* WRONG: 500 mms, 36 kgs
* BUT: It is correct to pluralize written-out metric unit names: 25 kilograms, 250 milliliters

Ссылки не фундаментальные, так что прошу поправить, ежели что не так.

:0))

Вот про метры коллега прав, а про футы…
С другой стороны и паллеты с транспортированием живут же.

Когда на суше перестали про футы да сажени говорить — давненько уже.

:0)