diff --git a/src/src/Rendering/Viewer/ResliceImageViewer.cpp b/src/src/Rendering/Viewer/ResliceImageViewer.cpp
index c4a9111..5a7cd4f 100644
--- a/src/src/Rendering/Viewer/ResliceImageViewer.cpp
+++ b/src/src/Rendering/Viewer/ResliceImageViewer.cpp
@@ -26,6 +26,7 @@ ResliceImageViewer::ResliceImageViewer()
         : vtkObject()
         , RenderWindow(nullptr)
         , Renderer(vtkRenderer::New())
+        , MeasureRenderer(vtkRenderer::New())
         , InteractorStyle(ResliceImageInteractorStyle::New())
         , Interactor(nullptr)
         , Mapper(vtkImageResliceMapper::New())
@@ -145,12 +146,18 @@ void ResliceImageViewer::Render() {
         if (FirstRender){
             //some first render logic
             FirstRender = false;
-            Renderer->AddActor2D(cursor1);
-            Renderer->AddActor2D(cursor2);
-            cursor1->SetSlicePoint(Renderer->GetActiveCamera()->GetFocalPoint());
-            cursor2->SetSlicePoint(Renderer->GetActiveCamera()->GetFocalPoint());
-            cursor1->SetProjectDirectionVector(Renderer->GetActiveCamera()->GetDirectionOfProjection());
-            cursor2->SetProjectDirectionVector(Renderer->GetActiveCamera()->GetDirectionOfProjection());
+            MeasureRenderer->SetActiveCamera(Renderer->GetActiveCamera());
+            RenderWindow->AddRenderer(MeasureRenderer);
+            MeasureRenderer->Delete();
+            RenderWindow->SetNumberOfLayers(2);
+            Renderer->SetLayer(0);
+            MeasureRenderer->SetLayer(1);
+            MeasureRenderer->AddActor2D(cursor1);
+            MeasureRenderer->AddActor2D(cursor2);
+            cursor1->SetSlicePoint(MeasureRenderer->GetActiveCamera()->GetFocalPoint());
+            cursor2->SetSlicePoint(MeasureRenderer->GetActiveCamera()->GetFocalPoint());
+            cursor1->SetProjectDirectionVector(MeasureRenderer->GetActiveCamera()->GetDirectionOfProjection());
+            cursor2->SetProjectDirectionVector(MeasureRenderer->GetActiveCamera()->GetDirectionOfProjection());
             double sliceDirection1[4]{.0, .0, .0, 1.};
             double sliceDirection2[4]{.0, .0, .0, 1.};
             switch (DefaultOrientation) {
@@ -192,8 +199,9 @@ void ResliceImageViewer::Render() {
             cursor1->AddObserver(ResliceCursorLegendActor::MOVE,this, &ResliceImageViewer::handleMove);
             cursor2->AddObserver(ResliceCursorLegendActor::ROLL,this, &ResliceImageViewer::handleRoll);
             cursor2->AddObserver(ResliceCursorLegendActor::MOVE,this, &ResliceImageViewer::handleMove);
-            Renderer->AddActor2D(Square);
+            MeasureRenderer->AddActor2D(Square);
             Render();
+
             return;
         }
         Interactor->Render();
@@ -230,6 +238,7 @@ void ResliceImageViewer::SetDefaultSliceOrientation(int orientation) {
     camera->SetPosition(position);
     camera->SetViewUp(ViewUp);
     Renderer->ResetCamera();
+    AdjustOrthogonalScale();
 }
 
 void ResliceImageViewer::SetCoordsTransformMatrix(vtkMatrix4x4 *matrix4X4) {
@@ -300,3 +309,13 @@ void ResliceImageViewer::handleResize() {
     cursor1->Modified();
     cursor2->Modified();
 }
+
+void ResliceImageViewer::AdjustOrthogonalScale() {
+    vtkCamera* camera = Renderer->GetActiveCamera();
+    double * viewUp = camera->GetViewUp();
+    vtkImageData * data = Mapper->GetInput();
+    int index = abs(((int)viewUp[0]) * 0 + ((int)viewUp[1]) * 1 + ((int)viewUp[2]) * 2);
+
+    double pixelScale = data->GetDimensions()[index]*data->GetSpacing()[index];
+     camera->SetParallelScale(pixelScale/2-3);
+}
diff --git a/src/src/Rendering/Viewer/ResliceImageViewer.h b/src/src/Rendering/Viewer/ResliceImageViewer.h
index 958991e..b477141 100644
--- a/src/src/Rendering/Viewer/ResliceImageViewer.h
+++ b/src/src/Rendering/Viewer/ResliceImageViewer.h
@@ -47,6 +47,7 @@ public:
     double* GetCursorSliceDirection1();
     double* GetCursorSliceDirection2();
 
+    void AdjustOrthogonalScale();
     void ChangeSlicePoint(double * point);
     void ChangeSliceNormal(double * normal);
     void EndDrag();