diff --git a/zoomer.h b/zoomer.h
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--- /dev/null
+++ b/zoomer.h
@@ -0,0 +1,34 @@
+/*
+  Copyright © 2015 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  serialplot is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef ZOOMER_H
+#define ZOOMER_H
+
+#include <qwt_plot_zoomer.h>
+
+class Zoomer : public QwtPlotZoomer
+{
+    Q_OBJECT
+
+public:
+    Zoomer(QWidget *, bool doReplot=true);
+    void zoom(int up);
+};
+
+#endif // ZOOMER_H