Index: trunk/core/kernel/utility/formatters.php
===================================================================
diff -u -r1766 -r1803
--- trunk/core/kernel/utility/formatters.php	(.../formatters.php)	(revision 1766)
+++ trunk/core/kernel/utility/formatters.php	(.../formatters.php)	(revision 1803)
@@ -908,13 +908,15 @@
 		{
 			$regional =& $this->Application->recallObject('lang.current');
 			$add_fields = Array();
-			$options_a =  Array('type' => 'int','error_field' => $field_name,'master_field' => $field_name,'format' => '%d');
-			$options_b =  Array('type' => 'double','error_field' => $field_name,'master_field' => $field_name,'format' => '%0.1f');
+			$options_a =  Array('type' => 'int','error_field' => $field_name,'master_field' => $field_name,'format' => '%d','min_value_inc' => 0 );
+			$options_b =  Array('type' => 'double','error_field' => $field_name,'master_field' => $field_name,'format' => '%0.1f','min_value_inc' => 0);
 			switch( $regional->GetDBField('UnitSystem') )
 			{
 				case 2: // US/UK
-					$add_fields[$field_name.'_a'] = array_merge_recursive2($field_options, $options_a);
-					$add_fields[$field_name.'_b'] = array_merge_recursive2($field_options, $options_b);
+					$field_options_copy = $field_options;
+					unset($field_options_copy['min_value_exc']);
+					$add_fields[$field_name.'_a'] = array_merge_recursive2($field_options_copy, $options_a);					
+					$add_fields[$field_name.'_b'] = array_merge_recursive2($field_options_copy, $options_b);
 				break;
 				default:
 			}
@@ -951,8 +953,8 @@
 				case 2: // US/UK
 					$major = floor( $value / 0.5 );
 					$minor = ($value - $major * 0.5) * 32;
-					$major = $object->SetDBField($field.'_a', $major);
-					$minor = $object->SetDBField($field.'_b', $minor);
+					$object->SetDBField($field.'_a', $major);
+					$object->SetDBField($field.'_b', $minor);
 				break;
 				default:
 			}