diff --git a/examples/cluster.c b/examples/cluster.c
index 83baf21..4ac3e6a 100644
--- a/examples/cluster.c
+++ b/examples/cluster.c
@@ -8,6 +8,24 @@
 #include <stdlib.h>
 #include <math.h>
 
+static void draw_needle(cairo_t *cr,
+                        double x,
+                        double y,
+                        double r,
+                        double min_angle,
+                        double max_angle,
+                        double value) {
+    double angle = min_angle + ((max_angle - min_angle) * value) - 90.0;
+
+    cairo_move_to(cr, x, y);
+
+    cairo_line_to(cr,
+                  x + r * cos((M_PI/180.0) * angle),
+                  y + r * sin((M_PI/180.0) * angle));
+
+    cairo_stroke(cr);
+}
+
 static void redraw(cairo_t *ctx) {
     /*
      * Paint canvas black
@@ -22,6 +40,14 @@ static void redraw(cairo_t *ctx) {
     cairo_arc(ctx, 208, 240, 192, 0, 360);
     cairo_stroke(ctx);
 
+    /*
+     * Draw a gauge needle
+     */
+    draw_needle(ctx, 208, 240, 176, 240, 480, 0.0);
+
+    /*
+     * Draw another circle
+     */
     cairo_arc(ctx, 816, 240, 192, 0, 360);
     cairo_stroke(ctx);