diff --git a/examples/cluster.c b/examples/cluster.c
index 8995f8a..e647ad0 100644
--- a/examples/cluster.c
+++ b/examples/cluster.c
@@ -50,11 +50,14 @@ static void draw_face_number(cairo_t *cr,
     cairo_restore(cr);
 }
 
-static void draw_tachometer(cairo_t *cr) {
+static void draw_tachometer(cairo_t *cr,
+                            double x,
+                            double y,
+                            double r) {
     int i;
 
     cairo_set_source_rgb(cr, 1, 1, 1);
-    cairo_arc(cr, 208, 240, 192, 0, 360);
+    cairo_arc(cr, x, y, r, 0, 360);
     cairo_stroke(cr);
 
     /*
@@ -64,19 +67,19 @@ static void draw_tachometer(cairo_t *cr) {
         char text[4];
 
         snprintf(text, 3, "%02d", i);
-        draw_face_number(cr, 208, 240, 162, 232, 488, i / 80.0, text);
+        draw_face_number(cr, x, y, 0.85 * r, 232, 488, i / 80.0, text);
     }
 
     /*
      * Draw a gauge needle
      */
-    draw_needle(cr, 208, 240, 148, 232, 488, 0.0);
+    draw_needle(cr, x, y, 0.77 * r, 232, 488, 0.0);
 
     /*
      * Draw a tiny boi circle
      */
     cairo_set_source_rgb(cr, 1, 1, 1);
-    cairo_arc(cr, 208, 240, 16, 0, 360);
+    cairo_arc(cr, x, y, 0.08 * r, 0, 360);
     cairo_fill(cr);
 }
 
@@ -133,7 +136,7 @@ static void redraw(cairo_t *cr) {
     cairo_set_source_rgb(cr, 0, 0, 0);
     cairo_paint(cr);
 
-    draw_tachometer(cr);
+    draw_tachometer(cr, 208, 240, 192);
     draw_speedometer(cr);
     draw_thermometer(cr);
     draw_fuel_gauge(cr);