diff --git a/js/common/FMWConstants.js b/js/common/FMWConstants.js
index a23c53a1..c19ab9ba 100644
--- a/js/common/FMWConstants.js
+++ b/js/common/FMWConstants.js
@@ -93,7 +93,20 @@ const FMWConstants = {
   // Charts
   ZOOM_BUTTON_GROUP_SCALE: 0.75,
   X_AXIS_LABEL_SPACING: 10, // horizontal space between chart rectangle and x-axis label
-  Y_AXIS_LABEL_SPACING: 36  // horizontal space between chart rectangle and y-axis label
+  Y_AXIS_LABEL_SPACING: 36,  // horizontal space between chart rectangle and y-axis label
+  AXIS_OPTIONS: {
+    fill: FMWColorProfile.axisStrokeProperty,
+    stroke: null,
+    tailWidth: 1
+  },
+  GRID_LINE_OPTIONS: {
+    stroke: FMWColorProfile.chartGridLinesStrokeProperty,
+    lineWidth: 0.5
+  },
+  TICK_MARK_OPTIONS: {
+    edge: 'min',
+    extent: 6
+  }
 };
 
 // Verify some of the above constants
diff --git a/js/common/view/WaveformChartNode.js b/js/common/view/WaveformChartNode.js
index a937297b..43cea442 100644
--- a/js/common/view/WaveformChartNode.js
+++ b/js/common/view/WaveformChartNode.js
@@ -31,23 +31,6 @@ import FMWZoomButtonGroup from './FMWZoomButtonGroup.js';
 import XTickLabelSet from './XTickLabelSet.js';
 import YTickLabelSet from './YTickLabelSet.js';
 
-// constants
-const AXIS_OPTIONS = {
-  fill: FMWColorProfile.axisStrokeProperty,
-  stroke: null,
-  tailWidth: 1
-};
-
-const GRID_LINE_OPTIONS = {
-  stroke: FMWColorProfile.chartGridLinesStrokeProperty,
-  lineWidth: 0.5
-};
-
-const TICK_MARK_OPTIONS = {
-  edge: 'min',
-  extent: 6
-};
-
 class WaveformChartNode extends Node {
 
   /**
@@ -105,13 +88,13 @@ class WaveformChartNode extends Node {
 
     // x axis (space or time) ---------------------------------------------------------
 
-    const xAxis = new AxisNode( chartTransform, Orientation.HORIZONTAL, AXIS_OPTIONS );
+    const xAxis = new AxisNode( chartTransform, Orientation.HORIZONTAL, FMWConstants.AXIS_OPTIONS );
 
     const xGridLines = new GridLineSet( chartTransform, Orientation.HORIZONTAL,
-      xAxisDescriptionProperty.value.gridLineSpacing, GRID_LINE_OPTIONS );
+      xAxisDescriptionProperty.value.gridLineSpacing, FMWConstants.GRID_LINE_OPTIONS );
 
     const xTickMarks = new TickMarkSet( chartTransform, Orientation.HORIZONTAL,
-      xAxisDescriptionProperty.value.tickMarkSpacing, TICK_MARK_OPTIONS );
+      xAxisDescriptionProperty.value.tickMarkSpacing, FMWConstants.TICK_MARK_OPTIONS );
 
     const xTickLabels = new XTickLabelSet( chartTransform, xAxisDescriptionProperty.value.tickLabelSpacing, domainProperty,
       xAxisTickLabelFormatProperty, L, T );
@@ -167,13 +150,13 @@ class WaveformChartNode extends Node {
 
     // y axis (amplitude ) ---------------------------------------------------------
 
-    const yAxis = new AxisNode( chartTransform, Orientation.VERTICAL, AXIS_OPTIONS );
+    const yAxis = new AxisNode( chartTransform, Orientation.VERTICAL, FMWConstants.AXIS_OPTIONS );
 
     const yGridLines = new GridLineSet( chartTransform, Orientation.VERTICAL,
-      yAxisDescriptionProperty.value.gridLineSpacing, GRID_LINE_OPTIONS );
+      yAxisDescriptionProperty.value.gridLineSpacing, FMWConstants.GRID_LINE_OPTIONS );
 
     const yTickMarks = new TickMarkSet( chartTransform, Orientation.VERTICAL,
-      yAxisDescriptionProperty.value.tickMarkSpacing, TICK_MARK_OPTIONS );
+      yAxisDescriptionProperty.value.tickMarkSpacing, FMWConstants.TICK_MARK_OPTIONS );
 
     const yTickLabels = new YTickLabelSet( chartTransform, yAxisDescriptionProperty.value.tickLabelSpacing );
 
diff --git a/js/wavepacket/view/ComponentsChartNode.js b/js/wavepacket/view/ComponentsChartNode.js
index 9b24d3c3..618fa58b 100644
--- a/js/wavepacket/view/ComponentsChartNode.js
+++ b/js/wavepacket/view/ComponentsChartNode.js
@@ -33,18 +33,6 @@ import fourierMakingWaves from '../../fourierMakingWaves.js';
 import fourierMakingWavesStrings from '../../fourierMakingWavesStrings.js';
 import ComponentsChart from '../model/ComponentsChart.js';
 
-//TODO duplicated in WaveformChartNode
-const TICK_MARK_OPTIONS = {
-  edge: 'min',
-  extent: 6
-};
-
-//TODO duplicated in WaveformChartNode
-const GRID_LINE_OPTIONS = {
-  stroke: FMWColorProfile.chartGridLinesStrokeProperty,
-  lineWidth: 0.5
-};
-
 class ComponentsChartNode extends Node {
 
   /**
@@ -87,6 +75,7 @@ class ComponentsChartNode extends Node {
 
     // x axis ---------------------------------------------------------
 
+    //TODO use AxisNode
     const xAxis = new Line( 0, 0, options.transformOptions.viewWidth, 0, {
       stroke: FMWColorProfile.axisStrokeProperty,
       lineWidth: 1,
@@ -100,10 +89,10 @@ class ComponentsChartNode extends Node {
     } );
 
     const xGridLines = new GridLineSet( chartTransform, Orientation.HORIZONTAL,
-      xAxisDescriptionProperty.value.gridLineSpacing, GRID_LINE_OPTIONS );
+      xAxisDescriptionProperty.value.gridLineSpacing, FMWConstants.GRID_LINE_OPTIONS );
 
     const xTickMarks = new TickMarkSet( chartTransform, Orientation.HORIZONTAL,
-      xAxisDescriptionProperty.value.tickMarkSpacing, TICK_MARK_OPTIONS );
+      xAxisDescriptionProperty.value.tickMarkSpacing, FMWConstants.TICK_MARK_OPTIONS );
 
     const xTickLabels = new XTickLabelSet( chartTransform, xAxisDescriptionProperty.value.tickLabelSpacing,
       domainProperty, new EnumerationProperty( TickLabelFormat, TickLabelFormat.NUMERIC ), L, T );
@@ -134,6 +123,7 @@ class ComponentsChartNode extends Node {
 
     // y axis ---------------------------------------------------------
 
+    //TODO use AxisNode
     const yAxis = new Line( 0, 0, 0, options.transformOptions.viewHeight, {
       stroke: FMWColorProfile.axisStrokeProperty,
       lineWidth: 1,
diff --git a/js/wavepacket/view/WavePacketAmplitudesChartNode.js b/js/wavepacket/view/WavePacketAmplitudesChartNode.js
index 642cb021..15b853b3 100644
--- a/js/wavepacket/view/WavePacketAmplitudesChartNode.js
+++ b/js/wavepacket/view/WavePacketAmplitudesChartNode.js
@@ -28,14 +28,6 @@ import fourierMakingWavesStrings from '../../fourierMakingWavesStrings.js';
 import WavePacketAmplitudesChart from '../model/WavePacketAmplitudesChart.js';
 import ContinuousWaveformCheckbox from './ContinuousWaveformCheckbox.js';
 
-// constants
-//TODO duplicated in WaveformChartNode
-const TICK_MARK_OPTIONS = {
-  edge: 'min',
-  extent: 6
-};
-
-//TODO placeholder
 class WavePacketAmplitudesChartNode extends Node {
 
   /**
@@ -75,12 +67,13 @@ class WavePacketAmplitudesChartNode extends Node {
 
     // x axis ---------------------------------------------------------
 
+    //TODO use AxisNode
     const xAxis = new Line( 0, 0, options.transformOptions.viewWidth, 0, {
       stroke: FMWColorProfile.axisStrokeProperty,
       lineWidth: 1
     } );
 
-    const xTickMarks = new TickMarkSet( chartTransform, Orientation.HORIZONTAL, Math.PI, TICK_MARK_OPTIONS );
+    const xTickMarks = new TickMarkSet( chartTransform, Orientation.HORIZONTAL, Math.PI, FMWConstants.TICK_MARK_OPTIONS );
 
     const xTickLabels = new LabelSet( chartTransform, Orientation.HORIZONTAL, 2 * Math.PI, {
       createLabel: createXTickLabel,
@@ -95,6 +88,7 @@ class WavePacketAmplitudesChartNode extends Node {
 
     // y axis ---------------------------------------------------------
 
+    //TODO use AxisNode
     const yAxis = new Line( 0, 0, 0, options.transformOptions.viewHeight, {
       stroke: FMWColorProfile.axisStrokeProperty,
       lineWidth: 1,
diff --git a/js/wavepacket/view/WavePacketSumChartNode.js b/js/wavepacket/view/WavePacketSumChartNode.js
index 4dd9da6f..d8f5dc1a 100644
--- a/js/wavepacket/view/WavePacketSumChartNode.js
+++ b/js/wavepacket/view/WavePacketSumChartNode.js
@@ -33,18 +33,6 @@ import fourierMakingWavesStrings from '../../fourierMakingWavesStrings.js';
 import WavePacketSumChart from '../model/WavePacketSumChart.js';
 import WaveformEnvelopeCheckbox from './WaveformEnvelopeCheckbox.js';
 
-//TODO duplicated in WaveformChartNode
-const TICK_MARK_OPTIONS = {
-  edge: 'min',
-  extent: 6
-};
-
-//TODO duplicated in WaveformChartNode
-const GRID_LINE_OPTIONS = {
-  stroke: FMWColorProfile.chartGridLinesStrokeProperty,
-  lineWidth: 0.5
-};
-
 class WavePacketSumChartNode extends Node {
 
   /**
@@ -87,6 +75,7 @@ class WavePacketSumChartNode extends Node {
 
     // x axis ---------------------------------------------------------
 
+    //TODO use AxisNode
     const xAxis = new Line( 0, 0, options.transformOptions.viewWidth, 0, {
       stroke: FMWColorProfile.axisStrokeProperty,
       lineWidth: 1,
@@ -100,10 +89,10 @@ class WavePacketSumChartNode extends Node {
     } );
 
     const xGridLines = new GridLineSet( chartTransform, Orientation.HORIZONTAL,
-      xAxisDescriptionProperty.value.gridLineSpacing, GRID_LINE_OPTIONS );
+      xAxisDescriptionProperty.value.gridLineSpacing, FMWConstants.GRID_LINE_OPTIONS );
 
     const xTickMarks = new TickMarkSet( chartTransform, Orientation.HORIZONTAL,
-      xAxisDescriptionProperty.value.tickMarkSpacing, TICK_MARK_OPTIONS );
+      xAxisDescriptionProperty.value.tickMarkSpacing, FMWConstants.TICK_MARK_OPTIONS );
 
     const xTickLabels = new XTickLabelSet( chartTransform, xAxisDescriptionProperty.value.tickLabelSpacing,
       domainProperty, new EnumerationProperty( TickLabelFormat, TickLabelFormat.NUMERIC ), L, T );
@@ -134,6 +123,7 @@ class WavePacketSumChartNode extends Node {
 
     // y axis ---------------------------------------------------------
 
+    //TODO use AxisNode
     const yAxis = new Line( 0, 0, 0, options.transformOptions.viewHeight, {
       stroke: FMWColorProfile.axisStrokeProperty,
       lineWidth: 1,