diff --git a/stock_usability/stock.py b/stock_usability/stock.py
index c7d9baa..8bff163 100644
--- a/stock_usability/stock.py
+++ b/stock_usability/stock.py
@@ -21,6 +21,7 @@
 ##############################################################################
 
 from openerp import models, fields
+import openerp.addons.decimal_precision as dp
 
 
 class StockInventory(models.Model):
@@ -50,11 +51,13 @@ class StockPickingType(models.Model):
 
     name = fields.Char(translate=False)
 
+
 class StockLocationRoute(models.Model):
     _inherit = 'stock.location.route'
 
     name = fields.Char(translate=False)
 
+
 class StockWarehouseOrderpoint(models.Model):
     _inherit = 'stock.warehouse.orderpoint'
 
@@ -64,3 +67,24 @@ class StockWarehouseOrderpoint(models.Model):
         'An orderpoint already exists for the same company, same warehouse, '
         'same stock location and same product.'
         )]
+
+
+class StockQuant(models.Model):
+    _inherit = 'stock.quant'
+
+    qty = fields.Float(digits=dp.get_precision('Product Unit of Measure'))
+
+
+class StockMove(models.Model):
+    _inherit = 'stock.move'
+
+    reserved_availability = fields.Float(
+        digits=dp.get_precision('Product Unit of Measure'))
+    availability = fields.Float(
+        digits=dp.get_precision('Product Unit of Measure'))
+
+
+class StockMoveOperationLink(models.Model):
+    _inherit = 'stock.move.operation.link'
+
+    qty = fields.Float(digits=dp.get_precision('Product Unit of Measure'))
diff --git a/stock_usability/stock_view.xml b/stock_usability/stock_view.xml
index b7fc0ff..82dfb19 100644
--- a/stock_usability/stock_view.xml
+++ b/stock_usability/stock_view.xml
@@ -231,6 +231,9 @@ in the quantities for his reception -->
         <field name="reservation_id" position="attributes">
             <attribute name="invisible">0</attribute>
         </field>
+        <field name="qty" position="attributes">
+            <attribute name="sum">Total Qty</attribute>
+        </field>
     </field>
 </record>