diff --git a/include/dynamic-graph/pool.h b/include/dynamic-graph/pool.h
index 6a9f11cc6d23d46838b7acc132b631ffc71acd56..be10f183de42fde3aced878c47014dbb10b403f9 100644
--- a/include/dynamic-graph/pool.h
+++ b/include/dynamic-graph/pool.h
@@ -87,6 +87,9 @@ namespace dynamicgraph
     */
     Entity& getEntity (const std::string& name);
 
+    /// Const access to entity map
+    const Entities& getEntityMap () const;
+
     /*! \brief Test if the entity exists. */
     bool existEntity (const std::string& name);
     /*! \brief Test if the entity exists. If it does, return a pointer on it. */
diff --git a/src/dgraph/pool.cpp b/src/dgraph/pool.cpp
index c2224d3485bf1acdebdc5f5f22115c012d7774bf..c407f709983a4008b8a102217ee32bed0bdc13ff 100644
--- a/src/dgraph/pool.cpp
+++ b/src/dgraph/pool.cpp
@@ -131,6 +131,12 @@ getEntity( const std::string& name )
   else return *entPtr->second;
 }
 
+const PoolStorage::Entities& PoolStorage::
+getEntityMap () const
+{
+  return entityMap;
+}
+
 bool PoolStorage::
 existEntity (const std::string& name)
 {