diff --git a/ImageViewTouch/src/it/sephiroth/android/library/imagezoom/ImageViewTouch.java b/ImageViewTouch/src/it/sephiroth/android/library/imagezoom/ImageViewTouch.java
index ffe0d60..50d2730 100644
--- a/ImageViewTouch/src/it/sephiroth/android/library/imagezoom/ImageViewTouch.java
+++ b/ImageViewTouch/src/it/sephiroth/android/library/imagezoom/ImageViewTouch.java
@@ -29,6 +29,7 @@ public class ImageViewTouch extends ImageViewTouchBase {
 	protected boolean mScrollEnabled = true;
 	private OnImageViewTouchDoubleTapListener mDoubleTapListener;
 	private OnImageViewTouchSingleTapListener mSingleTapListener;
+	private OnImageViewTouchScaleListener mUserScaleListener;
 
 	public ImageViewTouch ( Context context, AttributeSet attrs ) {
 		super( context, attrs );
@@ -55,6 +56,10 @@ public void setSingleTapListener( OnImageViewTouchSingleTapListener listener ) {
 		mSingleTapListener = listener;
 	}
 
+	public void setUserScaleListener( OnImageViewTouchScaleListener listener ) {
+        mUserScaleListener = listener;
+	}
+
 	public void setDoubleTapEnabled( boolean value ) {
 		mDoubleTapEnabled = value;
 	}
@@ -254,6 +259,11 @@ public boolean onScale( ScaleGestureDetector detector ) {
 			float targetScale = getScale() * detector.getScaleFactor();
 			
 			if ( mScaleEnabled ) {
+
+				if (mUserScaleListener != null) {
+                    mUserScaleListener.onScale();
+                }
+
 				if( mScaled && span != 0 ) {
 					targetScale = Math.min( getMaxScale(), Math.max( targetScale, getMinScale() - 0.1f ) );
 					zoomTo( targetScale, detector.getFocusX(), detector.getFocusY() );
@@ -279,4 +289,9 @@ public interface OnImageViewTouchSingleTapListener {
 
 		void onSingleTapConfirmed();
 	}
+
+    public interface OnImageViewTouchScaleListener {
+        void onScale();
+    }
+
 }