diff --git a/samples/blackmiscquantities_dbus/BlackMiscTest.Testservice.xml b/samples/blackmiscquantities_dbus/BlackMiscTest.Testservice.xml
index fc81aaae8..cdabcbf5a 100644
--- a/samples/blackmiscquantities_dbus/BlackMiscTest.Testservice.xml
+++ b/samples/blackmiscquantities_dbus/BlackMiscTest.Testservice.xml
@@ -23,7 +23,7 @@
       <annotation name="org.qtproject.QtDBus.QtTypeName.In0" value="BlackMisc::Aviation::CAltitude"/>
     </method>
     <method name="receiveMatrix">
-      <arg name="matrix" type="(ddddddddd)" direction="in"/>
+      <arg name="matrix" type="(adddddddddd)" direction="in"/>
       <annotation name="org.qtproject.QtDBus.QtTypeName.In0" value="BlackMisc::Math::CMatrix3x3"/>
     </method>
     <method name="receiveList">
@@ -42,5 +42,12 @@
       <arg name="track" type="(didb(s)(s)b)" direction="in"/>
       <annotation name="org.qtproject.QtDBus.QtTypeName.In0" value="BlackMisc::Aviation::CTrack"/>
     </method>
+    <method name="receiveLength">
+      <arg name="length" type="(didb(s)(s))" direction="in"/>
+      <annotation name="org.qtproject.QtDBus.QtTypeName.In0" value="BlackMisc::PhysicalQuantities::CLength"/>
+    </method>
+    <method name="receiveLengths">
+      <arg name="lengths" type="av" direction="in"/>
+    </method>
   </interface>
 </node>
diff --git a/samples/blackmiscquantities_dbus/main.cpp b/samples/blackmiscquantities_dbus/main.cpp
index 446f24d4e..f43989c1a 100644
--- a/samples/blackmiscquantities_dbus/main.cpp
+++ b/samples/blackmiscquantities_dbus/main.cpp
@@ -135,6 +135,20 @@ int main(int argc, char *argv[])
             testserviceInterface.receiveTrack(track);
             qDebug() << "Send track via interface" << track;
 
+            CLength len(33, CLengthUnit::m());
+            testserviceInterface.receiveLength(len);
+            qDebug() << "Send length via interface" << len;
+
+            CAltitude alt(33, true, CLengthUnit::m());
+            testserviceInterface.receiveLength(alt);
+            qDebug() << "Send altitude via interface" << alt;
+
+            QVariantList lengths;
+            lengths << QVariant::fromValue(len);
+            lengths << QVariant::fromValue(alt);
+            testserviceInterface.receiveLengths(lengths);
+            qDebug() << "Send lengths via interface";
+
             TestserviceTool::sleep(2500);
 
             // Math
diff --git a/samples/blackmiscquantities_dbus/testservice.cpp b/samples/blackmiscquantities_dbus/testservice.cpp
index 52715c063..6d88cf33c 100644
--- a/samples/blackmiscquantities_dbus/testservice.cpp
+++ b/samples/blackmiscquantities_dbus/testservice.cpp
@@ -101,4 +101,24 @@ void Testservice::receiveTrack(const BlackMisc::Aviation::CTrack &track)
     qDebug() << "Pid:" << TestserviceTool::getPid() << "Received track:" << track;
 }
 
+/*
+ * Receive a length
+ */
+void Testservice::receiveLength(const BlackMisc::PhysicalQuantities::CLength &length)
+{
+    qDebug() << "Pid:" << TestserviceTool::getPid() << "Received length:" << length;
+}
+
+/*
+ * Receive lengths
+ */
+void Testservice::receiveLengths(const QVariantList &lengths)
+{
+    BlackMisc::PhysicalQuantities::CLength l;
+    foreach(QVariant lv, lengths) {
+        l = lv.value<BlackMisc::PhysicalQuantities::CLength>();
+        qDebug() << "Pid:" << TestserviceTool::getPid() << "Received in list:" << l;
+    }
+}
+
 } // namespace
diff --git a/samples/blackmiscquantities_dbus/testservice.h b/samples/blackmiscquantities_dbus/testservice.h
index c31d5364b..d9028b6a4 100644
--- a/samples/blackmiscquantities_dbus/testservice.h
+++ b/samples/blackmiscquantities_dbus/testservice.h
@@ -106,6 +106,18 @@ public slots:
      */
     void receiveTrack(const BlackMisc::Aviation::CTrack &track);
 
+    /*!
+     * \brief Receive a length
+     * \param length
+     */
+    void receiveLength(const BlackMisc::PhysicalQuantities::CLength &length);
+
+    /*!
+     * \brief Receive lengths
+     * \param length
+     */
+    void receiveLengths(const QVariantList &lengths);
+
 public:
     static const QString ServiceName;
     static const QString ServicePath;
diff --git a/src/blackmisc/pqbase.h b/src/blackmisc/pqbase.h
index ff1bb2cd5..cd3ffa643 100644
--- a/src/blackmisc/pqbase.h
+++ b/src/blackmisc/pqbase.h
@@ -24,7 +24,6 @@ namespace PhysicalQuantities
  * \brief Typical prefixes (multipliers) such as kilo, mega, hecto.
  * See <a href="http://www.poynton.com/notes/units/index.html">here</a> for an overview.
  * Use the static values such CMeasurementMultiplier::k() as to specify values.
- * \author KWB
  */
 class CMeasurementPrefix : public CBaseStreamStringifier
 {
diff --git a/src/blackmisc/pqphysicalquantity.h b/src/blackmisc/pqphysicalquantity.h
index b09eab05e..fb832e952 100644
--- a/src/blackmisc/pqphysicalquantity.h
+++ b/src/blackmisc/pqphysicalquantity.h
@@ -458,8 +458,10 @@ public:
     {
         qRegisterMetaType<MU>(typeid(MU).name());
         qDBusRegisterMetaType<MU>();
+        qDBusRegisterMetaType<QList<MU>>();
         qRegisterMetaType<PQ>(typeid(PQ).name());
         qDBusRegisterMetaType<PQ>();
+        qDBusRegisterMetaType<QList<PQ>>();
     }
 
 };