diff --git a/lib/src/linear_gauge/linear_gauge_painter.dart b/lib/src/linear_gauge/linear_gauge_painter.dart
index 3058d88..4a9e9f8 100644
--- a/lib/src/linear_gauge/linear_gauge_painter.dart
+++ b/lib/src/linear_gauge/linear_gauge_painter.dart
@@ -2178,7 +2178,7 @@ class RenderLinearGauge extends RenderBox
         _movableWidget.onChanged!(value);
       }
     } else if (_pointerType is RenderLinearGaugeShapePointer) {
-      if (_movablePointer.isInteractive) {
+      if (_movablePointer.isInteractive && _movablePointer.onChanged != null) {
         _movablePointer.onChanged!(value);
       }
     }
diff --git a/lib/src/radial_gauge/radial_gauge_container_painter.dart b/lib/src/radial_gauge/radial_gauge_container_painter.dart
index 6abc6c9..5e37566 100644
--- a/lib/src/radial_gauge/radial_gauge_container_painter.dart
+++ b/lib/src/radial_gauge/radial_gauge_container_painter.dart
@@ -153,10 +153,10 @@ class RenderRadialGaugeContainer extends RenderBox {
   }
 
   int calculateNumOfDivisions(int steps, double start, double end) {
-    double range = end - start.toDouble();
-    int numOfDivisions = range ~/ steps;
-
-    return numOfDivisions;
+    // double range = end - start.toDouble();
+    // int numOfDivisions = (range / steps).ceil();
+    // return numOfDivisions;
+    return steps;
   }
 
   @override
@@ -183,12 +183,12 @@ class RenderRadialGaugeContainer extends RenderBox {
         getRadialGauge.track.trackStyle.primaryRulersHeight ?? 10;
     double arcLength = endAngle - startAngle; // length of the arc in radians
 
-    double numParts = calculateNumOfDivisions(
-      getRadialGauge.track.steps,
-      getRadialGauge.track.start,
-      getRadialGauge.track.end,
-    ).toDouble();
-
+    // double numParts = calculateNumOfDivisions(
+    //   getRadialGauge.track.steps,
+    //   getRadialGauge.track.start,
+    //   getRadialGauge.track.end,
+    // ).toDouble();
+    double numParts = getRadialGauge.track.steps.toDouble();
     // double radialOffset = getRadialGauge.valueBar!.first.radialOffset;
 
     double partAngle = arcLength / numParts; // angle of each part in radians