# [uf-discuss] Re: Currency + Unit of measurement (Was: Currency+Product)

Guillaume Lebleu gl at brixlogic.com
Tue Oct 3 12:17:30 PDT 2006

```Here are some additional examples  from the Web of currency mixed with
measures, some of which differ from the "\$__ per barrel" pattern and a
suggested new conceptualization that seems to work with them.

http://microformats.org/wiki/currency-examples#Real-World_Examples

Here is another suggested conceptualization that seems to match what's
on the Web:

\$ is not a unit, \$ is a currency. "Dollar" "Cent" are the units of the
"USD" currency. Just like length is not a unit, but meter and foot are.

Currency measures have a default unit (for USD, it's the dollar), that
is sometimes omitted in the representation of currency amounts.

*Example 1*

So "\$25 per barrel" is really "\$25 dollar per barrel", but a computer
can figure this out from:

<span class="price"><abbr class="currency" title="USD">\$</abbr><span
class="value">25</span> <span class="unitdivider">per</span> <span
class="unit" title="BLL">barrel</span></span></span>

BLL is the UNECE code for barrel. See
http://microformats.org/wiki/measure-formats#UNECE

*Example 2*

"25 (USD per barrel)" is really "25 \$ dollar per barrel", "\$" is the
currency, "dollar per barrel" is the unit but a computer can figure this
out from:

<span class="price">25 (<abbr class="currency" title="USD">USD</abbr>
<span class="unitdivider">per</span> <span class="unit"
title="BLL">barrel</span>)</span>

*Example 3*

Similarly in "\$150K per year" the currency is "\$" but the "unit is
thousands of dollars per year", but the computer can figure it out from:

<span class="salary"><abbr class="currency" title="USD">\$</abbr>150<abbr
class="unitmultiple" title="1000">K</abbr> <span
class="unitdivider">per</span> <span class="unit"
title="ANN">year</span></span></span>

ANN is the UNECE code for year. See
http://microformats.org/wiki/measure-formats#UNECE

Let me know what you think. I'll put this on the wiki later.

Guillaume
```