diff --git a/applications/fpvviewer/fpvectorialsrc/fpvectorial.pas b/applications/fpvviewer/fpvectorialsrc/fpvectorial.pas
index d7d58542b..88f14e183 100644
--- a/applications/fpvviewer/fpvectorialsrc/fpvectorial.pas
+++ b/applications/fpvviewer/fpvectorialsrc/fpvectorial.pas
@@ -208,6 +208,11 @@ type
   end;
 
   {@@
+   DimensionLeft ---text--- DimensionRight
+                 |        |
+                 |        | BaseRight
+                 |
+                 | BaseLeft
   }
 
   { TvAlignedDimension }
@@ -343,6 +348,7 @@ procedure RegisterVectorialReader(
 procedure RegisterVectorialWriter(
   AWriterClass: TvVectorialWriterClass;
   AFormat: TvVectorialFormat);
+function Make2DPoint(AX, AY: Double): T3DPoint;
 
 implementation
 
@@ -433,6 +439,13 @@ begin
   end;
 end;
 
+function Make2DPoint(AX, AY: Double): T3DPoint;
+begin
+  Result.X := AX;
+  Result.Y := AY;
+  Result.Z := 0;
+end;
+
 { TvEllipse }
 
 procedure TvEllipse.CalculateBoundingRectangle;
diff --git a/applications/fpvviewer/fpvv_mainform.lfm b/applications/fpvviewer/fpvv_mainform.lfm
index f8bbfc291..b4de179a1 100644
--- a/applications/fpvviewer/fpvv_mainform.lfm
+++ b/applications/fpvviewer/fpvv_mainform.lfm
@@ -76,8 +76,8 @@ object frmFPVViewer: TfrmFPVViewer
     object pageViewer: TPage
     end
     object Page2: TPage
-      ClientWidth = 8448
-      ClientHeight = 9984
+      ClientWidth = 16896
+      ClientHeight = 19968
       object DXFTreeView: TTreeView
         Left = 8
         Height = 313
@@ -88,4 +88,13 @@ object frmFPVViewer: TfrmFPVViewer
       end
     end
   end
+  object buttonRenderingTest: TButton
+    Left = 256
+    Height = 25
+    Top = 41
+    Width = 96
+    Caption = 'Render Test'
+    OnClick = buttonRenderingTestClick
+    TabOrder = 5
+  end
 end
diff --git a/applications/fpvviewer/fpvv_mainform.pas b/applications/fpvviewer/fpvv_mainform.pas
index d286bfbea..6c7f2e5c2 100644
--- a/applications/fpvviewer/fpvv_mainform.pas
+++ b/applications/fpvviewer/fpvv_mainform.pas
@@ -16,6 +16,7 @@ type
   TfrmFPVViewer = class(TForm)
     btnVisualize: TButton;
     btnViewDXFTokens: TButton;
+    buttonRenderingTest: TButton;
     editFileName: TFileNameEdit;
     notebook: TNotebook;
     pageViewer: TPage;
@@ -25,6 +26,7 @@ type
     DXFTreeView: TTreeView;
     procedure btnVisualizeClick(Sender: TObject);
     procedure btnViewDXFTokensClick(Sender: TObject);
+    procedure buttonRenderingTestClick(Sender: TObject);
     procedure FormCreate(Sender: TObject);
     procedure FormDestroy(Sender: TObject);
   private
@@ -121,6 +123,37 @@ begin
   end;
 end;
 
+procedure TfrmFPVViewer.buttonRenderingTestClick(Sender: TObject);
+var
+  Vec: TvVectorialDocument;
+begin
+  notebook.PageIndex := 0;
+
+  Drawer.Clear;
+
+  Vec := TvVectorialDocument.Create;
+  try
+    Vec.AddAlignedDimension(Make2DPoint(100, 50), Make2DPoint(200, 100), Make2DPoint(100, 150), Make2DPoint(200, 150));
+    Vec.AddAlignedDimension(Make2DPoint(50, 250), Make2DPoint(100, 200), Make2DPoint(150, 250), Make2DPoint(150, 200));
+
+    Drawer.Drawing.Width := 400;
+    Drawer.Drawing.Height := 400;
+    Drawer.Drawing.Canvas.Brush.Color := clWhite;
+    Drawer.Drawing.Canvas.Brush.Style := bsSolid;
+    Drawer.Drawing.Canvas.FillRect(0, 0, Drawer.Drawing.Width, Drawer.Drawing.Height);
+    DrawFPVectorialToCanvas(
+      Vec,
+      Drawer.Drawing.Canvas,
+      0,
+      Drawer.Drawing.Height,
+      spinScale.Value,
+      -1 * spinScale.Value);
+    Drawer.Invalidate;
+  finally
+    Vec.Free;
+  end;
+end;
+
 procedure TfrmFPVViewer.FormCreate(Sender: TObject);
 begin
   Drawer := TFPVVDrawer.Create(Self);