diff -r e3f805ba74ca -r b351d3a7917c controls/DebugVariablePanel/DebugVariableViewer.py
--- a/controls/DebugVariablePanel/DebugVariableViewer.py	Mon Jun 03 08:41:10 2013 +0200
+++ b/controls/DebugVariablePanel/DebugVariableViewer.py	Mon Jun 03 11:11:46 2013 +0200
@@ -160,6 +160,15 @@
         for item in self.Items:
             item.ResetData()
     
+    def GetItemsMinCommonTick(self):
+        """
+        Return the minimum tick common to all iems displayed in Viewer
+        @return: Minimum common tick between items
+        """
+        return reduce(max, [item.GetData()[0, 0] 
+                            for item in self.Items
+                            if len(item.GetData()) > 0], 0)
+    
     def RefreshViewer(self):
         """
         Method that refresh the content displayed by Viewer