diff --git a/src/controls/LevelingSensor/QsgNodeUtility.h b/src/controls/LevelingSensor/QsgNodeUtility.h
index 11e3ac84..70b26504 100644
--- a/src/controls/LevelingSensor/QsgNodeUtility.h
+++ b/src/controls/LevelingSensor/QsgNodeUtility.h
@@ -3,7 +3,7 @@
 #include <QSGNode>
 #include <type_traits>
 
-namespace qsg
+namespace QskSGNode
 {
     using NodeType = QSGNode;
 
diff --git a/src/controls/LevelingSensor/QskLevelingSensor.h b/src/controls/LevelingSensor/QskLevelingSensor.h
index f077dfb2..b27229bc 100644
--- a/src/controls/LevelingSensor/QskLevelingSensor.h
+++ b/src/controls/LevelingSensor/QskLevelingSensor.h
@@ -5,17 +5,6 @@
 #include <QVector3D>
 #include <QskAspect.h>
 
-/// @brief This control can display the pitch, roll and yaw angles
-/// @note x = pitch, y = yaw, z = roll
-/// 
-///    ^y+
-///    |
-///    |
-///    |
-///    +------------->x+
-///   /
-///  /
-/// v z+
 class QSK_EXPORT LevelingSensor : public QskControl
 {
     Q_OBJECT
@@ -52,7 +41,6 @@ public:
     Q_REQUIRED_RESULT const TickmarksLabels& tickmarkLabels(Qt::Axis axis) const;
     Q_REQUIRED_RESULT const QVector3D& angle() const noexcept;
 private:
-    /// @brief The sensors rotation per axis: x := roll, y := pitch, z := yaw
     QVector3D m_rotation;
     QVector3D m_angle = { 45,45,45 };
     Tickmarks m_tickmarks[3];
diff --git a/src/controls/LevelingSensor/QskLevelingSensorSkinlet.cpp b/src/controls/LevelingSensor/QskLevelingSensorSkinlet.cpp
index 78bda401..89025b12 100644
--- a/src/controls/LevelingSensor/QskLevelingSensorSkinlet.cpp
+++ b/src/controls/LevelingSensor/QskLevelingSensorSkinlet.cpp
@@ -27,7 +27,7 @@
 using Q = LevelingSensor;
 using R = LevelingSensorSkinlet::NodeRole;
 
-using namespace qsg;
+using namespace QskSGNode;
 
 float LevelingSensorSkinlet::radius2(const QskSkinnable* const skinnable)
 {
@@ -137,7 +137,7 @@ QSGNode* LevelingSensorSkinlet::updateSubNode<R::OuterDisk>(const LevelingSensor
 
     const auto cX = center(sensor).x();
     const auto cY = center(sensor).y();
-    const auto rZ = sensor->arcMetricsHint(subControl).startAngle();
+    const auto rZ = 0.0;
 
     const auto matrix =
         matrix_deg(0.0, 0.0, 0.0, cX, cY, 0) *
@@ -157,7 +157,7 @@ QSGNode* LevelingSensorSkinlet::updateSubNode<R::Horizon>(const LevelingSensor*
     const auto cX = center(sensor).x();
     const auto cY = center(sensor).y();
     const auto rX = sensor->rotation().x();
-    const auto rZ = sensor->arcMetricsHint(subControl).startAngle();
+    const auto rZ = 0.0;
     const auto dY = 2 * sensor->angle().y();
     const auto p = qBound(0.0, 0.5 + (-rX / dY), 1.0);
 
diff --git a/src/controls/LevelingSensor/QskLevelingSensorUtility.h b/src/controls/LevelingSensor/QskLevelingSensorUtility.h
index cba2ea20..99d73f9a 100644
--- a/src/controls/LevelingSensor/QskLevelingSensorUtility.h
+++ b/src/controls/LevelingSensor/QskLevelingSensorUtility.h
@@ -4,6 +4,7 @@
 #include <qmatrix4x4.h>
 
 #include <QskScaleTickmarks.h>
+#include <QskFunctions.h>
 
 // create a homogenous transformation matrix
 inline Q_REQUIRED_RESULT QMatrix4x4 matrix_deg(
@@ -51,7 +52,7 @@ inline bool compare_exchange(T& dst, const T& src)
 template<>
 inline bool compare_exchange<float>(float& dst, const float& src)
 {
-    if (!qFuzzyCompare(dst, src))
+    if (!qskFuzzyCompare (dst, src))
     {
         dst = src;
         return true;
@@ -62,7 +63,7 @@ inline bool compare_exchange<float>(float& dst, const float& src)
 template<>
 inline bool compare_exchange<qreal>(qreal& dst, const qreal& src)
 {
-    if (!qFuzzyCompare(dst, src))
+    if (!qskFuzzyCompare (dst, src))
     {
         dst = src;
         return true;