<?xml version="1.0" encoding="utf-8"?>
<openerp>
  <data>

    <record id="product_uom_categ_surface" model="product.uom.categ">
      <field name="name">Surface</field>
    </record>

    <record id="product_uom_m2" model="product.uom">
      <field name="name">m²</field>
      <field name="category_id" eval="product_uom_categ_surface"/>
    </record>

    <record id="product_uom_feet2" model="product.uom">
      <field name="name">feet²</field>
      <field name="category_id" eval="product_uom_categ_surface"/>
    </record>

  </data>
</openerp>

<?xml version="1.0" encoding="utf-8"?>
<openerp>
  <data>

    <record id="product_uom_categ_surface" model="product.uom.categ">
      <field name="name">Surface</field>
    </record>

    <record id="product_uom_m2" model="product.uom">
      <field name="name">m²</field>
      <field name="category_id" eval="product_uom_categ_surface"/>
      <field name="uom_type">reference</field>
    </record>

    <record id="product_uom_feet2" model="product.uom">
      <field name="name">feet²</field>
      <field name="category_id" eval="product_uom_categ_surface"/>
      <field name="uom_type">smaller</field>
      <field name="factor">10.76391042</field>
    </record>

  </data>
</openerp>

Add units of measure conversion
Add units of measure conversion
