diff --git a/src/Mod/Sketcher/Gui/CMakeLists.txt b/src/Mod/Sketcher/Gui/CMakeLists.txt
index 8e2149596..3a88305c0 100644
--- a/src/Mod/Sketcher/Gui/CMakeLists.txt
+++ b/src/Mod/Sketcher/Gui/CMakeLists.txt
@@ -36,6 +36,7 @@ set(SketcherGui_MOC_HDRS
     TaskSketcherValidation.h
     TaskDlgEditSketch.h
     SketchOrientationDialog.h
+    SketchMirrorDialog.h
     SketcherSettings.h
     SketchRectangularArrayDialog.h
     PropertyConstraintListItem.h
@@ -54,6 +55,7 @@ set(SketcherGui_UIC_SRCS
     TaskSketcherValidation.ui
     InsertDatum.ui
     SketchOrientationDialog.ui
+    SketchMirrorDialog.ui
     SketcherSettings.ui
     SketchRectangularArrayDialog.ui
 )
@@ -110,6 +112,8 @@ SET(SketcherGui_SRCS
     EditDatumDialog.h
     SketchOrientationDialog.cpp
     SketchOrientationDialog.h
+    SketchMirrorDialog.cpp
+    SketchMirrorDialog.h
     SketcherSettings.cpp
     SketcherSettings.h
     SketchRectangularArrayDialog.h
diff --git a/src/Mod/Sketcher/Gui/Command.cpp b/src/Mod/Sketcher/Gui/Command.cpp
index aefaf42f7..c1f8770ce 100644
--- a/src/Mod/Sketcher/Gui/Command.cpp
+++ b/src/Mod/Sketcher/Gui/Command.cpp
@@ -46,6 +46,7 @@
 #include <Mod/Part/App/Part2DObject.h>
 
 #include "SketchOrientationDialog.h"
+#include "SketchMirrorDialog.h"
 #include "ViewProviderSketch.h"
 #include "TaskSketcherValidation.h"
 #include "../App/Constraint.h"
@@ -506,10 +507,121 @@ bool CmdSketcherValidateSketch::isActive(void)
     return (hasActiveDocument() && !Gui::Control().activeDialog());
 }
 
+DEF_STD_CMD_A(CmdSketcherMirrorSketch);
+
+CmdSketcherMirrorSketch::CmdSketcherMirrorSketch()
+: Command("Sketcher_MirrorSketch")
+{
+    sAppModule      = "Sketcher";
+    sGroup          = QT_TR_NOOP("Sketcher");
+    sMenuText       = QT_TR_NOOP("Mirror sketch");
+    sToolTipText    = QT_TR_NOOP("Mirror sketch");
+    sWhatsThis      = "Sketcher_MirrorSketch";
+    sStatusTip      = sToolTipText;
+    eType           = 0;
+    sPixmap         = "Sketcher_MirrorSketch";
+}
+
+void CmdSketcherMirrorSketch::activated(int iMsg)
+{
+    std::vector<Gui::SelectionObject> selection = getSelection().getSelectionEx(0, Sketcher::SketchObject::getClassTypeId());
+    if (selection.size() < 1) {
+        QMessageBox::warning(Gui::getMainWindow(),
+            qApp->translate("CmdSketcherMirrorSketch", "Wrong selection"),
+            qApp->translate("CmdSketcherMirrorSketch", "Select one or more sketches, please."));
+        return;
+    }
+    
+    // Ask the user which kind of mirroring he wants
+    SketchMirrorDialog * smd = new SketchMirrorDialog();
+    
+    int refgeoid=-1;
+    Sketcher::PointPos refposid=Sketcher::none;
+    
+    if( smd->exec() == QDialog::Accepted ){
+        refgeoid=smd->RefGeoid;
+        refposid=smd->RefPosid;
+        
+        delete smd;
+    }
+    else {
+        delete smd;
+        return;
+    }
+    
+    App::Document* doc = App::GetApplication().getActiveDocument();
+    
+    openCommand("Create a mirror Sketch for each sketch");
+    
+    for (std::vector<Gui::SelectionObject>::const_iterator it=selection.begin(); it != selection.end(); ++it) {
+        // create Sketch 
+        std::string FeatName = getUniqueObjectName("MirroredSketch");
+        
+        doCommand(Doc,"App.activeDocument().addObject('Sketcher::SketchObject','%s')",FeatName.c_str());
+        
+        Sketcher::SketchObject* mirrorsketch = static_cast<Sketcher::SketchObject*>(doc->getObject(FeatName.c_str()));       
+        
+        const Sketcher::SketchObject* Obj = static_cast<const Sketcher::SketchObject*>((*it).getObject());
+        
+        Base::Placement pl = Obj->Placement.getValue();
+        
+        Base::Vector3d p = pl.getPosition();
+        Base::Rotation r = pl.getRotation();
+        
+        doCommand(Doc,"App.activeDocument().%s.Placement = App.Placement(App.Vector(%f,%f,%f),App.Rotation(%f,%f,%f,%f))",
+                  FeatName.c_str(),
+                  p.x,p.y,p.z,r[0],r[1],r[2],r[3]);
+        
+        Sketcher::SketchObject* tempsketch = new Sketcher::SketchObject();
+        
+        int addedGeometries=tempsketch->addGeometry(Obj->getInternalGeometry());
+        
+        int addedConstraints=tempsketch->addConstraints(Obj->Constraints.getValues());
+
+        std::vector<int> geoIdList;
+        
+        for(int i=0;i<=addedGeometries;i++)
+            geoIdList.push_back(i);
+        
+        tempsketch->addSymmetric(geoIdList, refgeoid, refposid);
+                
+        std::vector<Part::Geometry *> tempgeo = tempsketch->getInternalGeometry();
+        std::vector<Sketcher::Constraint *> tempconstr = tempsketch->Constraints.getValues();
+        
+        int nconstraints = tempconstr.size();
+        
+        std::vector<Part::Geometry *> mirrorgeo (tempgeo.begin()+addedGeometries+1,tempgeo.end());
+        std::vector<Sketcher::Constraint *> mirrorconstr (tempconstr.begin()+addedConstraints+1,tempconstr.end());
+        
+        for(std::vector<Sketcher::Constraint *>::const_iterator itc=mirrorconstr.begin(); itc != mirrorconstr.end(); ++itc) {
+ 
+            if((*itc)->First!=Sketcher::Constraint::GeoUndef || (*itc)->First==-1 || (*itc)->First==-2) // not x, y axes or origin
+                (*itc)->First-=(addedGeometries+1);
+            if((*itc)->Second!=Sketcher::Constraint::GeoUndef || (*itc)->Second==-1 || (*itc)->Second==-2) // not x, y axes or origin
+                (*itc)->Second-=(addedGeometries+1);
+            if((*itc)->Third!=Sketcher::Constraint::GeoUndef || (*itc)->Third==-1 || (*itc)->Third==-2) // not x, y axes or origin
+                (*itc)->Third-=(addedGeometries+1);
+        }
+        
+        mirrorsketch->addGeometry(mirrorgeo);
+        mirrorsketch->addConstraints(mirrorconstr);
+        
+        delete tempsketch;
+    }
+    
+    doCommand(Gui,"App.activeDocument().recompute()");
+    
+}
+
+bool CmdSketcherMirrorSketch::isActive(void)
+{
+    return (hasActiveDocument() && !Gui::Control().activeDialog());
+}
+
 DEF_STD_CMD_A(CmdSketcherMergeSketches);
 
 CmdSketcherMergeSketches::CmdSketcherMergeSketches()
-  : Command("Sketcher_MergeSketches")
+: Command("Sketcher_MergeSketches")
 {
     sAppModule      = "Sketcher";
     sGroup          = QT_TR_NOOP("Sketcher");
@@ -526,18 +638,18 @@ void CmdSketcherMergeSketches::activated(int iMsg)
     std::vector<Gui::SelectionObject> selection = getSelection().getSelectionEx(0, Sketcher::SketchObject::getClassTypeId());
     if (selection.size() < 2) {
         QMessageBox::warning(Gui::getMainWindow(),
-            qApp->translate("CmdSketcherMergeSketches", "Wrong selection"),
-            qApp->translate("CmdSketcherMergeSketches", "Select at least two sketches, please."));
+                             qApp->translate("CmdSketcherMergeSketches", "Wrong selection"),
+                             qApp->translate("CmdSketcherMergeSketches", "Select at least two sketches, please."));
         return;
     }
-
+    
     Sketcher::SketchObject* Obj1 = static_cast<Sketcher::SketchObject*>(selection[0].getObject());
     
     App::Document* doc = App::GetApplication().getActiveDocument();
-       
+    
     // create Sketch 
     std::string FeatName = getUniqueObjectName("Sketch");
-
+    
     openCommand("Create a merge Sketch");
     doCommand(Doc,"App.activeDocument().addObject('Sketcher::SketchObject','%s')",FeatName.c_str());
     
@@ -553,16 +665,16 @@ void CmdSketcherMergeSketches::activated(int iMsg)
         int addedConstraints=mergesketch->addConstraints(Obj->Constraints.getValues());
         
         for(int i=0; i<=(addedConstraints-baseConstraints); i++){
-                Sketcher::Constraint * constraint= mergesketch->Constraints.getValues()[i+baseConstraints];
-                
-                if(constraint->First!=Sketcher::Constraint::GeoUndef || constraint->First==-1 || constraint->First==-2) // not x, y axes or origin
-                    constraint->First+=baseGeometry;
-                if(constraint->Second!=Sketcher::Constraint::GeoUndef || constraint->Second==-1 || constraint->Second==-2) // not x, y axes or origin
-                    constraint->Second+=baseGeometry;
-                if(constraint->Third!=Sketcher::Constraint::GeoUndef || constraint->Third==-1 || constraint->Third==-2) // not x, y axes or origin
-                    constraint->Third+=baseGeometry;
-        }
+            Sketcher::Constraint * constraint= mergesketch->Constraints.getValues()[i+baseConstraints];
             
+            if(constraint->First!=Sketcher::Constraint::GeoUndef || constraint->First==-1 || constraint->First==-2) // not x, y axes or origin
+                constraint->First+=baseGeometry;
+            if(constraint->Second!=Sketcher::Constraint::GeoUndef || constraint->Second==-1 || constraint->Second==-2) // not x, y axes or origin
+                constraint->Second+=baseGeometry;
+            if(constraint->Third!=Sketcher::Constraint::GeoUndef || constraint->Third==-1 || constraint->Third==-2) // not x, y axes or origin
+                constraint->Third+=baseGeometry;
+        }
+        
         baseGeometry=addedGeometries+1;
         baseConstraints=addedConstraints+1;
     }
@@ -576,8 +688,6 @@ bool CmdSketcherMergeSketches::isActive(void)
     return (hasActiveDocument() && !Gui::Control().activeDialog());
 }
 
-
-
 void CreateSketcherCommands(void)
 {
     Gui::CommandManager &rcCmdMgr = Gui::Application::Instance->commandManager();
@@ -589,5 +699,6 @@ void CreateSketcherCommands(void)
     rcCmdMgr.addCommand(new CmdSketcherMapSketch());
     rcCmdMgr.addCommand(new CmdSketcherViewSketch());
     rcCmdMgr.addCommand(new CmdSketcherValidateSketch());
+    rcCmdMgr.addCommand(new CmdSketcherMirrorSketch());
     rcCmdMgr.addCommand(new CmdSketcherMergeSketches());
 }
diff --git a/src/Mod/Sketcher/Gui/CommandSketcherTools.cpp b/src/Mod/Sketcher/Gui/CommandSketcherTools.cpp
index b8b04fd62..7e223013f 100644
--- a/src/Mod/Sketcher/Gui/CommandSketcherTools.cpp
+++ b/src/Mod/Sketcher/Gui/CommandSketcherTools.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (c) 2014 Abdullah Tahiri <abdullah.tahiri.yo@gmail.com	     *
+ *   Copyright (c) 2014 Abdullah Tahiri <abdullah.tahiri.yo@gmail.com	   *
  *                                                                         *
  *   This file is part of the FreeCAD CAx development system.              *
  *                                                                         *
diff --git a/src/Mod/Sketcher/Gui/SketchMirrorDialog.cpp b/src/Mod/Sketcher/Gui/SketchMirrorDialog.cpp
new file mode 100644
index 000000000..48aae92cb
--- /dev/null
+++ b/src/Mod/Sketcher/Gui/SketchMirrorDialog.cpp
@@ -0,0 +1,69 @@
+/***************************************************************************
+ *   Copyright (c) 2015 Abdullah Tahiri <abdullah.tahiri.yo@gmail.com      *
+ *                                                                         *
+ *   This file is part of the FreeCAD CAx development system.              *
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2 of the License, or (at your option) any later version.      *
+ *                                                                         *
+ *   This library  is distributed in the hope that it will be useful,      *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU Library General Public License for more details.                  *
+ *                                                                         *
+ *   You should have received a copy of the GNU Library General Public     *
+ *   License along with this library; see the file COPYING.LIB. If not,    *
+ *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
+ *   Suite 330, Boston, MA  02111-1307, USA                                *
+ *                                                                         *
+ ***************************************************************************/
+
+#include "PreCompiled.h"
+
+#ifndef _PreComp_
+# include <QPixmap>
+# include <QDialog>
+#endif
+
+#include <Gui/BitmapFactory.h>
+#include <Gui/MainWindow.h>
+#include <Base/Tools.h>
+#include <Base/UnitsApi.h>
+
+#include "ui_SketchMirrorDialog.h"
+#include "SketchMirrorDialog.h"
+
+using namespace SketcherGui;
+
+SketchMirrorDialog::SketchMirrorDialog(void)
+  : QDialog(Gui::getMainWindow()), ui(new Ui_SketchMirrorDialog), RefGeoid(-1), RefPosid(Sketcher::none)
+{
+    ui->setupUi(this);
+}
+
+SketchMirrorDialog::~SketchMirrorDialog()
+{
+
+}
+
+void SketchMirrorDialog::accept()
+{
+    if (ui->XAxisRadioButton->isChecked()) {
+        RefGeoid=-1;
+        RefPosid=Sketcher::none;
+    }
+    else if (ui->YAxisRadioButton->isChecked()) {
+        RefGeoid=-2;
+        RefPosid=Sketcher::none; 
+    }
+    else if (ui->OriginRadioButton->isChecked()) {
+        RefGeoid=-1;
+        RefPosid=Sketcher::start; 
+    }
+
+    QDialog::accept();
+}
+
+#include "moc_SketchMirrorDialog.cpp"
diff --git a/src/Mod/Sketcher/Gui/SketchMirrorDialog.h b/src/Mod/Sketcher/Gui/SketchMirrorDialog.h
new file mode 100644
index 000000000..a1475064c
--- /dev/null
+++ b/src/Mod/Sketcher/Gui/SketchMirrorDialog.h
@@ -0,0 +1,51 @@
+/***************************************************************************
+ *   Copyright (c) 2015 Abdullah Tahiri <abdullah.tahiri.yo@gmail.com      *
+ *                                                                         *
+ *   This file is part of the FreeCAD CAx development system.              *
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2 of the License, or (at your option) any later version.      *
+ *                                                                         *
+ *   This library  is distributed in the hope that it will be useful,      *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU Library General Public License for more details.                  *
+ *                                                                         *
+ *   You should have received a copy of the GNU Library General Public     *
+ *   License along with this library; see the file COPYING.LIB. If not,    *
+ *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
+ *   Suite 330, Boston, MA  02111-1307, USA                                *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef SKETCHERGUI_SketchMirrorDialog_H
+#define SKETCHERGUI_SketchMirrorDialog_H
+
+#include <QDialog>
+#include "../App/Constraint.h"
+
+namespace SketcherGui {
+
+class Ui_SketchMirrorDialog;
+class SketchMirrorDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    SketchMirrorDialog(void);
+    ~SketchMirrorDialog();
+
+    int RefGeoid;
+    Sketcher::PointPos RefPosid;
+
+    void accept();
+
+private:
+    Ui_SketchMirrorDialog* ui;
+};
+
+}
+
+#endif // SKETCHERGUI_SketchMirrorDialog_H
diff --git a/src/Mod/Sketcher/Gui/SketchMirrorDialog.ui b/src/Mod/Sketcher/Gui/SketchMirrorDialog.ui
new file mode 100644
index 000000000..e1e5ab203
--- /dev/null
+++ b/src/Mod/Sketcher/Gui/SketchMirrorDialog.ui
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>SketcherGui::SketchMirrorDialog</class>
+ <widget class="QDialog" name="SketcherGui::SketchMirrorDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>220</width>
+    <height>171</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Select Mirror Axis/Point</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <item row="0" column="0">
+    <widget class="QGroupBox" name="groupBox">
+     <property name="title">
+      <string>Select Mirror Axis/Point</string>
+     </property>
+     <layout class="QVBoxLayout" name="verticalLayout">
+      <item>
+       <widget class="QRadioButton" name="XAxisRadioButton">
+        <property name="text">
+         <string>X-Axis</string>
+        </property>
+        <property name="checked">
+         <bool>true</bool>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QRadioButton" name="YAxisRadioButton">
+        <property name="text">
+         <string>Y-Axis</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QRadioButton" name="OriginRadioButton">
+        <property name="text">
+         <string>Origin</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="2" column="0" colspan="2">
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>SketcherGui::SketchMirrorDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>SketcherGui::SketchMirrorDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/Mod/Sketcher/Gui/Workbench.cpp b/src/Mod/Sketcher/Gui/Workbench.cpp
index f1682397f..b091d6684 100644
--- a/src/Mod/Sketcher/Gui/Workbench.cpp
+++ b/src/Mod/Sketcher/Gui/Workbench.cpp
@@ -271,7 +271,8 @@ template <>
 inline void SketcherAddWorkspaceSketchExtra<Gui::MenuItem>(Gui::MenuItem& sketch){
     sketch  << "Sketcher_ReorientSketch"
             << "Sketcher_ValidateSketch"
-            << "Sketcher_MergeSketches";
+            << "Sketcher_MergeSketches"
+            << "Sketcher_MirrorSketch";
 }
 
 template <typename T>