diff --git a/src/blackmisc/pqphysicalquantity.cpp b/src/blackmisc/pqphysicalquantity.cpp
index 436ad1624..27fcb2769 100644
--- a/src/blackmisc/pqphysicalquantity.cpp
+++ b/src/blackmisc/pqphysicalquantity.cpp
@@ -20,6 +20,16 @@ namespace BlackMisc
             // void
         }
 
+        /*
+         * Copy constructor
+         * (The implicitly generated copy constructor would suffice, but for what seems to be a bug in MSVC2010 template instantiation)
+         */
+        template <class MU, class PQ> CPhysicalQuantity<MU, PQ>::CPhysicalQuantity(const CPhysicalQuantity &other) :
+            m_value(other.m_value), m_unit(other.m_unit)
+        {
+            // void
+        }
+
         /*
          * Equal operator ==
          */
diff --git a/src/blackmisc/pqphysicalquantity.h b/src/blackmisc/pqphysicalquantity.h
index 841a6cdaf..18ce23f68 100644
--- a/src/blackmisc/pqphysicalquantity.h
+++ b/src/blackmisc/pqphysicalquantity.h
@@ -61,6 +61,12 @@ namespace BlackMisc
              */
             CPhysicalQuantity(double value, const MU &unit);
 
+            /*!
+             * \brief Copy constructor
+             * \param other
+             */
+            CPhysicalQuantity(const CPhysicalQuantity &other);
+
             /*!
              * \brief Rounded value as string
              * \param i18n