diff --git a/src/App/FreeCADInit.py b/src/App/FreeCADInit.py
index b17957f620..7d391edd32 100644
--- a/src/App/FreeCADInit.py
+++ b/src/App/FreeCADInit.py
@@ -306,7 +306,13 @@ App.Units.KiloPascal    = App.Units.Quantity('kPa')
 App.Units.MegaPascal    = App.Units.Quantity('MPa')
 App.Units.GigaPascal    = App.Units.Quantity('GPa')
 
+App.Units.PoundForce    = App.Units.Quantity().PoundForce
+App.Units.Torr          = App.Units.Quantity().Torr
+App.Units.mTorr         = App.Units.Quantity().mTorr
+App.Units.yTorr         = App.Units.Quantity().yTorr
+
 App.Units.PSI           = App.Units.Quantity('psi')
+App.Units.KSI           = App.Units.Quantity('ksi')
 
 App.Units.Watt          = App.Units.Quantity('W')
 App.Units.VoltAmpere    = App.Units.Quantity('VA')
@@ -325,12 +331,15 @@ App.Units.KMH           = App.Units.Quantity('km/h')
 App.Units.Degree        = App.Units.Quantity('deg')
 App.Units.Radian        = App.Units.Quantity('rad')
 App.Units.Gon           = App.Units.Quantity('gon')
+App.Units.AngularMinute = App.Units.Quantity().AngularMinute
+App.Units.AngularSecond = App.Units.Quantity().AngularSecond
 
 App.Units.Length        = App.Units.Unit(1)
 App.Units.Area          = App.Units.Unit(2)
 App.Units.Volume        = App.Units.Unit(3)
 App.Units.Mass          = App.Units.Unit(0,1) 
 App.Units.Angle         = App.Units.Unit(0,0,0,0,0,0,0,1) 
+App.Units.Density       = App.Units.Unit(-3,1)
 
 App.Units.TimeSpan      = App.Units.Unit(0,0,1) 
 App.Units.Velocity      = App.Units.Unit(1,0,-1) 
@@ -349,6 +358,14 @@ App.Units.Force         = App.Units.Unit(1,1,-2)
 App.Units.Work          = App.Units.Unit(2,1,-2) 
 App.Units.Power         = App.Units.Unit(2,1,-3) 
 
+App.Units.SpecificEnergy               = App.Units.Unit(2,0,-2)
+App.Units.ThermalConductivity          = App.Units.Unit(1,1,-3,0,-1)
+App.Units.ThermalExpansionCoefficient  = App.Units.Unit(0,0,0,0,-1)
+App.Units.SpecificHeat                 = App.Units.Unit(2,0,-2,0,-1)
+App.Units.ThermalTransferCoefficient   = App.Units.Unit(0,1,-3,0,-1)
+App.Units.HeatFlux                     = App.Units.Unit(0,1,-3,0,0)
+App.Units.DynamicViscosity             = App.Units.Unit(-1,1,-1)
+App.Units.KinematicViscosity           = App.Units.Unit(2,0,-1)
 
 # clean up namespace
 del(InitApplications)
diff --git a/src/Base/QuantityPyImp.cpp b/src/Base/QuantityPyImp.cpp
index 86729b7e49..508d566e58 100644
--- a/src/Base/QuantityPyImp.cpp
+++ b/src/Base/QuantityPyImp.cpp
@@ -663,8 +663,26 @@ void  QuantityPy::setFormat(Py::Dict arg)
     getQuantityPtr()->setFormat(fmt);
 }
 
-PyObject *QuantityPy::getCustomAttributes(const char* /*attr*/) const
+PyObject *QuantityPy::getCustomAttributes(const char* attr) const
 {
+    if (strcmp(attr, "Torr") == 0) {
+        return new QuantityPy(new Quantity(Quantity::Torr));
+    }
+    else if (strcmp(attr, "mTorr") == 0) {
+        return new QuantityPy(new Quantity(Quantity::mTorr));
+    }
+    else if (strcmp(attr, "yTorr") == 0) {
+        return new QuantityPy(new Quantity(Quantity::yTorr));
+    }
+    else if (strcmp(attr, "PoundForce") == 0) {
+        return new QuantityPy(new Quantity(Quantity::PoundForce));
+    }
+    else if (strcmp(attr, "AngularMinute") == 0) {
+        return new QuantityPy(new Quantity(Quantity::AngMinute));
+    }
+    else if (strcmp(attr, "AngularSecond") == 0) {
+        return new QuantityPy(new Quantity(Quantity::AngSecond));
+    }
     return 0;
 }
 
diff --git a/src/Base/UnitPy.xml b/src/Base/UnitPy.xml
index 47e8dcf7e6..484a9060a0 100644
--- a/src/Base/UnitPy.xml
+++ b/src/Base/UnitPy.xml
@@ -34,5 +34,11 @@
 			</Documentation>
 			<Parameter Name="Type" Type="String" />
 		</Attribute>
-	</PythonExport>
+        <Attribute Name="Signature" ReadOnly="true">
+            <Documentation>
+                <UserDocu>Returns the signature.</UserDocu>
+            </Documentation>
+            <Parameter Name="Signature" Type="Tuple" />
+        </Attribute>
+    </PythonExport>
 </GenerateModel>
diff --git a/src/Base/UnitPyImp.cpp b/src/Base/UnitPyImp.cpp
index 4698d70889..cbce411eb4 100644
--- a/src/Base/UnitPyImp.cpp
+++ b/src/Base/UnitPyImp.cpp
@@ -182,6 +182,21 @@ Py::String UnitPy::getType(void) const
     return Py::String(getUnitPtr()->getTypeString().toUtf8(),"utf-8");
 }
 
+Py::Tuple UnitPy::getSignature(void) const
+{
+    const UnitSignature &  Sig = getUnitPtr()->getSignature();
+    Py::Tuple tuple(8);
+    tuple.setItem(0, Py::Long(Sig.Length));
+    tuple.setItem(1, Py::Long(Sig.Mass));
+    tuple.setItem(2, Py::Long(Sig.Time));
+    tuple.setItem(3, Py::Long(Sig.ElectricCurrent));
+    tuple.setItem(4, Py::Long(Sig.ThermodynamicTemperature));
+    tuple.setItem(5, Py::Long(Sig.AmountOfSubstance));
+    tuple.setItem(6, Py::Long(Sig.LuminousIntensity));
+    tuple.setItem(7, Py::Long(Sig.Angle));
+    return tuple;
+}
+
 
 
 PyObject *UnitPy::getCustomAttributes(const char* /*attr*/) const