diff --git a/src/app/tape/share/resources/tapeicon.qrc b/src/app/tape/share/resources/tapeicon.qrc
index ba2328ff5..026f42132 100644
--- a/src/app/tape/share/resources/tapeicon.qrc
+++ b/src/app/tape/share/resources/tapeicon.qrc
@@ -8,5 +8,6 @@
         <file>tapeicon/24x24/red_plus.png</file>
         <file>tapeicon/24x24/padlock_locked.png</file>
         <file>tapeicon/24x24/padlock_opened.png</file>
+        <file>tapeicon/24x24/mannequin.png</file>
     </qresource>
 </RCC>
diff --git a/src/app/tape/share/resources/tapeicon/24x24/mannequin.png b/src/app/tape/share/resources/tapeicon/24x24/mannequin.png
new file mode 100644
index 000000000..e1d3e554c
Binary files /dev/null and b/src/app/tape/share/resources/tapeicon/24x24/mannequin.png differ
diff --git a/src/app/tape/tmainwindow.cpp b/src/app/tape/tmainwindow.cpp
index fe3fe9ce3..d739f4fd1 100644
--- a/src/app/tape/tmainwindow.cpp
+++ b/src/app/tape/tmainwindow.cpp
@@ -97,7 +97,7 @@ TMainWindow::TMainWindow(QWidget *parent)
       labelGradationSizes(nullptr),
       labelPatternUnit(nullptr),
       actionDockDiagram(nullptr),
-      dockDiagramVisible(false),
+      dockDiagramVisible(true),
       isInitialized(false),
       recentFileActs(),
       separatorAct(nullptr)
@@ -1757,7 +1757,9 @@ void TMainWindow::SetupMenu()
     actionDockDiagram = ui->dockWidgetDiagram->toggleViewAction();
     actionDockDiagram->setMenuRole(QAction::NoRole);
     ui->menuMeasurements->addAction(actionDockDiagram);
+    ui->mainToolBar->addAction(actionDockDiagram);
     actionDockDiagram->setEnabled(false);
+    actionDockDiagram->setIcon(QIcon("://tapeicon/24x24/mannequin.png"));
 
     // Window
     connect(ui->menuWindow, &QMenu::aboutToShow, this, &TMainWindow::AboutToShowWindowMenu);
diff --git a/src/libs/vgeometry/vabstractcubicbezier.cpp b/src/libs/vgeometry/vabstractcubicbezier.cpp
index 6a167bc1e..feb04cd51 100644
--- a/src/libs/vgeometry/vabstractcubicbezier.cpp
+++ b/src/libs/vgeometry/vabstractcubicbezier.cpp
@@ -31,6 +31,7 @@
 
 #include <QPainterPath>
 #include <QDebug>
+#include <QtCore/qmath.h>
 
 //---------------------------------------------------------------------------------------------------------------------
 VAbstractCubicBezier::VAbstractCubicBezier(const GOType &type, const quint32 &idObject, const Draw &mode)
diff --git a/src/libs/vgeometry/varc.cpp b/src/libs/vgeometry/varc.cpp
index 6637d3ad7..2936c1036 100644
--- a/src/libs/vgeometry/varc.cpp
+++ b/src/libs/vgeometry/varc.cpp
@@ -123,7 +123,7 @@ VArc::~VArc()
  */
 qreal VArc::GetLength() const
 {
-    qreal length = (M_PI * d->radius)/180 * AngleArc();
+    qreal length = d->radius * qDegreesToRadians(AngleArc());
     if (d->isFlipped)
     {
         length *= -1;
@@ -232,7 +232,7 @@ QVector<QPointF> VArc::GetPoints() const
 
     for (int i = 0; i < sectionAngle.size(); ++i)
     {
-        const qreal lDistance = GetRadius() * 4.0/3.0 * qTan(M_PI/180.0 * sectionAngle.at(i) * 0.25);
+        const qreal lDistance = GetRadius() * 4.0/3.0 * qTan(qDegreesToRadians(sectionAngle.at(i)) * 0.25);
 
         const QPointF center = GetCenter().toQPointF();
 
@@ -297,7 +297,8 @@ QPointF VArc::CutArc(const qreal &length, VArc &arc1, VArc &arc2) const
         len = length;
     }
 
-    qreal n = (len*180)/(M_PI*d->radius); // n - is angle in degrees
+    qreal n = qRadiansToDegrees(len/d->radius); // n - is angle in degrees
+
     QLineF line(GetCenter().toQPointF(), GetP1());
     line.setAngle(line.angle()+n);
 
@@ -374,7 +375,7 @@ void VArc::FindF2(qreal length)
         length = MaxLength();
     }
 
-    qreal arcAngle = (qAbs(length)*180)/(M_PI*d->radius);
+    qreal arcAngle = qAbs(qRadiansToDegrees(length/d->radius));
 
     if (d->isFlipped)
     {
diff --git a/src/libs/vtools/tools/drawTools/vdrawtool.h b/src/libs/vtools/tools/drawTools/vdrawtool.h
index dcabb0288..76e8adfa3 100644
--- a/src/libs/vtools/tools/drawTools/vdrawtool.h
+++ b/src/libs/vtools/tools/drawTools/vdrawtool.h
@@ -30,7 +30,7 @@
 #define VDRAWTOOL_H
 
 #include "../vabstracttool.h"
-#include "../../dialogs/tools/dialogtool.h"
+#include "dialogs/tools/dialogtool.h"
 #include "../vwidgets/vmaingraphicsview.h"
 
 #include <QMenu>
diff --git a/src/libs/vtools/tools/vabstracttool.h b/src/libs/vtools/tools/vabstracttool.h
index 8a86c7e90..8126fdfb8 100644
--- a/src/libs/vtools/tools/vabstracttool.h
+++ b/src/libs/vtools/tools/vabstracttool.h
@@ -33,7 +33,7 @@
 #include "../ifc/xml/vabstractpattern.h"
 #include "../vmisc/vabstractapplication.h"
 #include "../vwidgets/vmaingraphicsscene.h"
-#include "../visualization/visualization.h"
+#include "visualization/visualization.h"
 
 class QDomElement;
 class QLineF;
diff --git a/src/libs/vtools/tools/vdatatool.h b/src/libs/vtools/tools/vdatatool.h
index 3b939b07e..6405e2a59 100644
--- a/src/libs/vtools/tools/vdatatool.h
+++ b/src/libs/vtools/tools/vdatatool.h
@@ -29,7 +29,7 @@
 #ifndef VDATATOOL_H
 #define VDATATOOL_H
 
-#include "../../vpatterndb/vcontainer.h"
+#include "../vpatterndb/vcontainer.h"
 #include "../vmisc/logging.h"
 
 Q_DECLARE_LOGGING_CATEGORY(vTool)