diff --git a/.all-contributorsrc b/.all-contributorsrc
index 50140e260..f4119730e 100644
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@@ -383,6 +383,18 @@
         "review",
         "userTesting"
       ]
+    },
+    {
+      "login": "ArturRod",
+      "name": "Arturo Rodrigo",
+      "avatar_url": "https://avatars.githubusercontent.com/u/86238895?v=4",
+      "profile": "https://github.com/ArturRod",
+      "contributions": [
+        "code",
+        "content",
+        "example",
+        "tool"
+      ]
     }
   ],
   "contributorsPerLine": 7
diff --git a/README.md b/README.md
index d1da45af7..b65a1458c 100755
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@
 <!-- prettier-ignore-start -->
 [![Build Status][build-badge]][build]
 [![Coverage Status][coverage-badge]][coverage]
-[![All Contributors](https://img.shields.io/badge/all_contributors-37-orange.svg?style=flat-square)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-38-orange.svg?style=flat-square)](#contributors)
 
 [![NPM version][npm-version-image]][npm-url]
 [![NPM downloads][npm-downloads-image]][npm-url]
@@ -168,7 +168,7 @@ Thanks goes to these people ([emoji key][emojis]):
 | [<img src="https://avatars3.githubusercontent.com/u/3358381?v=4" width="100px;" alt="Juan Narvaez"/><br /><sub><b>Juan Narvaez</b></sub>](https://github.com/jdnarvaez)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=jdnarvaez "Code") | [<img src="https://avatars0.githubusercontent.com/u/814227?v=4" width="100px;" alt="Mike"/><br /><sub><b>Mike</b></sub>](https://github.com/mikehazell)<br />[📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=mikehazell "Documentation") [💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=mikehazell "Code") [⚠️](https://github.com/cornerstonejs/cornerstoneTools/commits?author=mikehazell "Tests") | [<img src="https://avatars2.githubusercontent.com/u/3329885?v=4" width="100px;" alt="Sangkeun Kim"/><br /><sub><b>Sangkeun Kim</b></sub>](http://sisobus.com)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=sisobus "Code") [💬](#question-sisobus "Answering Questions") | [<img src="https://avatars3.githubusercontent.com/u/378021?v=4" width="100px;" alt="Victor Saase"/><br /><sub><b>Victor Saase</b></sub>](https://github.com/vsaase)<br />[🤔](#ideas-vsaase "Ideas, Planning, & Feedback") | [<img src="https://avatars2.githubusercontent.com/u/120943?v=4" width="100px;" alt="Michael Wasser"/><br /><sub><b>Michael Wasser</b></sub>](http://www.mikewasser.com)<br />[📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=untoldone "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/11068601?v=4" width="100px;" alt="Amandeep Singh"/><br /><sub><b>Amandeep Singh</b></sub>](https://github.com/singhArmani)<br />[🖋](#content-singhArmani "Content") | [<img src="https://avatars0.githubusercontent.com/u/1474137?v=4" width="100px;" alt="Madison Dickson"/><br /><sub><b>Madison Dickson</b></sub>](http://mix3dstudios.com)<br />[📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=mix3d "Documentation") |
 | [<img src="https://avatars1.githubusercontent.com/u/3342530?v=4" width="100px;" alt="Kevin Lee Drum"/><br /><sub><b>Kevin Lee Drum</b></sub>](https://github.com/kevinleedrum)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=kevinleedrum "Code") | [<img src="https://avatars3.githubusercontent.com/u/11224291?v=4" width="100px;" alt="Makarand Bauskar"/><br /><sub><b>Makarand Bauskar</b></sub>](https://github.com/mmbauskar)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=mbauskar "Code") | [<img src="https://avatars0.githubusercontent.com/u/1713255?v=4" width="100px;" alt="Biharck Araujo"/><br /><sub><b>Biharck Araujo</b></sub>](http://www.biharck.com.br)<br />[💡](#example-biharck "Examples") [📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=biharck "Documentation") | [<img src="https://avatars3.githubusercontent.com/u/5349517?v=4" width="100px;" alt="Devon Bernard"/><br /><sub><b>Devon Bernard</b></sub>](https://www.linkedin.com/in/devonbernard)<br />[📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=DevonBernard "Documentation") | [<img src="https://avatars2.githubusercontent.com/u/38315992?v=4" width="100px;" alt="Karl-Heinrich"/><br /><sub><b>Karl-Heinrich</b></sub>](https://github.com/Karl-Heinrich)<br />[🐛](https://github.com/cornerstonejs/cornerstoneTools/issues?q=author%3AKarl-Heinrich "Bug reports") [💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=Karl-Heinrich "Code") [⚠️](https://github.com/cornerstonejs/cornerstoneTools/commits?author=Karl-Heinrich "Tests") | [<img src="https://avatars0.githubusercontent.com/u/15172026?v=4" width="100px;" alt="counterxing"/><br /><sub><b>counterxing</b></sub>](https://blog.xingbofeng.com/)<br />[🐛](https://github.com/cornerstonejs/cornerstoneTools/issues?q=author%3Axingbofeng "Bug reports") [💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=xingbofeng "Code") | [<img src="https://avatars0.githubusercontent.com/u/50026015?v=4" width="100px;" alt="Jorge Lopes"/><br /><sub><b>Jorge Lopes</b></sub>](https://github.com/jlopes90)<br />[💬](#question-jlopes90 "Answering Questions") |
 | [<img src="https://avatars2.githubusercontent.com/u/5546851?v=4" width="100px;" alt="Gabriel Garrido"/><br /><sub><b>Gabriel Garrido</b></sub>](http://garrido.io)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=Ggpsv "Code") | [<img src="https://avatars0.githubusercontent.com/u/4126256?v=4" width="100px;" alt="ASVBPREAUBV"/><br /><sub><b>ASVBPREAUBV</b></sub>](https://github.com/ASVBPREAUBV)<br />[📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=ASVBPREAUBV "Documentation") | [<img src="https://avatars0.githubusercontent.com/u/50960211?v=4" width="100px;" alt="frolic06"/><br /><sub><b>frolic06</b></sub>](https://github.com/frolic06)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=frolic06 "Code") | [<img src="https://avatars2.githubusercontent.com/u/26968918?v=4" width="100px;" alt="codepage949"/><br /><sub><b>codepage949</b></sub>](https://github.com/codepage949)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=codepage949 "Code") | [<img src="https://avatars.githubusercontent.com/u/1915?v=4" width="100px;" alt="Asherah Connor"/><br /><sub><b>Asherah Connor</b></sub>](https://kivikakk.ee)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=kivikakk "Code") | [<img src="https://avatars.githubusercontent.com/u/22633385?v=4" width="100px;" alt="Ikko Ashimine"/><br /><sub><b>Ikko Ashimine</b></sub>](https://bandism.net/)<br />[🐛](https://github.com/cornerstonejs/cornerstoneTools/issues?q=author%3Aeltociear "Bug reports") | [<img src="https://avatars.githubusercontent.com/u/27778909?v=4" width="100px;" alt="Bill Wallace"/><br /><sub><b>Bill Wallace</b></sub>](https://github.com/wayfarer3130)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=wayfarer3130 "Code") [📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=wayfarer3130 "Documentation") |
-| [<img src="https://avatars.githubusercontent.com/u/3341923?v=4" width="100px;" alt="Bruno Alves de Faria"/><br /><sub><b>Bruno Alves de Faria</b></sub>](http://radicalimaging.com/)<br />[🐛](https://github.com/cornerstonejs/cornerstoneTools/issues?q=author%3Abrunoalvesdefaria "Bug reports") [💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=brunoalvesdefaria "Code") [🖋](#content-brunoalvesdefaria "Content") [📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=brunoalvesdefaria "Documentation") [🔌](#plugin-brunoalvesdefaria "Plugin/utility libraries") [👀](#review-brunoalvesdefaria "Reviewed Pull Requests") [⚠️](https://github.com/cornerstonejs/cornerstoneTools/commits?author=brunoalvesdefaria "Tests") [🔧](#tool-brunoalvesdefaria "Tools") [📓](#userTesting-brunoalvesdefaria "User Testing") | [<img src="https://avatars.githubusercontent.com/u/13886933?v=4" width="100px;" alt="Igor Octaviano"/><br /><sub><b>Igor Octaviano</b></sub>](http://igoroctaviano.com)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=igoroctaviano "Code") [📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=igoroctaviano "Documentation") [🚧](#maintenance-igoroctaviano "Maintenance") [👀](#review-igoroctaviano "Reviewed Pull Requests") [📓](#userTesting-igoroctaviano "User Testing") |
+| [<img src="https://avatars.githubusercontent.com/u/3341923?v=4" width="100px;" alt="Bruno Alves de Faria"/><br /><sub><b>Bruno Alves de Faria</b></sub>](http://radicalimaging.com/)<br />[🐛](https://github.com/cornerstonejs/cornerstoneTools/issues?q=author%3Abrunoalvesdefaria "Bug reports") [💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=brunoalvesdefaria "Code") [🖋](#content-brunoalvesdefaria "Content") [📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=brunoalvesdefaria "Documentation") [🔌](#plugin-brunoalvesdefaria "Plugin/utility libraries") [👀](#review-brunoalvesdefaria "Reviewed Pull Requests") [⚠️](https://github.com/cornerstonejs/cornerstoneTools/commits?author=brunoalvesdefaria "Tests") [🔧](#tool-brunoalvesdefaria "Tools") [📓](#userTesting-brunoalvesdefaria "User Testing") | [<img src="https://avatars.githubusercontent.com/u/13886933?v=4" width="100px;" alt="Igor Octaviano"/><br /><sub><b>Igor Octaviano</b></sub>](http://igoroctaviano.com)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=igoroctaviano "Code") [📖](https://github.com/cornerstonejs/cornerstoneTools/commits?author=igoroctaviano "Documentation") [🚧](#maintenance-igoroctaviano "Maintenance") [👀](#review-igoroctaviano "Reviewed Pull Requests") [📓](#userTesting-igoroctaviano "User Testing") | [<img src="https://avatars.githubusercontent.com/u/86238895?v=4" width="100px;" alt="Arturo Rodrigo"/><br /><sub><b>Arturo Rodrigo</b></sub>](https://github.com/ArturRod)<br />[💻](https://github.com/cornerstonejs/cornerstoneTools/commits?author=ArturRod "Code") [🖋](#content-ArturRod "Content") [💡](#example-ArturRod "Examples") [🔧](#tool-ArturRod "Tools") |
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 
 This project follows the [all-contributors][all-contributors] specification.
diff --git a/index.html b/index.html
index 0230776ac..ad0fa351c 100644
--- a/index.html
+++ b/index.html
@@ -62,6 +62,7 @@
         <li><a href="#" data-tool="Length">Length</a></li>
         <li><a href="#" data-tool="Probe">Probe</a></li>
         <li><a href="#" data-tool="RectangleRoi">RectangleRoi</a></li>
+        <li><a href="#" data-tool="Height">Height</a></li>
       </ul>
 
       <ul class="tool-category" data-tool-category="segmentation">
diff --git a/src/drawing/drawHeight.js b/src/drawing/drawHeight.js
new file mode 100644
index 000000000..66535df63
--- /dev/null
+++ b/src/drawing/drawHeight.js
@@ -0,0 +1,48 @@
+import external from './../externalModules.js';
+import path from './path.js';
+
+/**
+ * Draw a line between `start` and `end`.
+ *
+ * @public
+ * @method drawHeight
+ * @memberof Drawing
+ *
+ * @param {CanvasRenderingContext2D} context
+ * @param {HTMLElement} element - The DOM Element to draw on
+ * @param {Object} start - `{ x, y } in either pixel or canvas coordinates.
+ * @param {Object} end - `{ x, y }` in either pixel or canvas coordinates.
+ * @param {Object} options - See {@link path}
+ * @param {String} [coordSystem='pixel'] - Can be "pixel" (default) or "canvas". The coordinate
+ * @param {Number} initialRotation - Ellipse initial rotation
+ *     system of the points passed in to the function. If "pixel" then cornerstone.pixelToCanvas
+ *     is used to transform the points from pixel to canvas coordinates.
+ * @returns {undefined}
+ */
+export default function(
+  context,
+  element,
+  start,
+  end,
+  options,
+  coordSystem = 'pixel'
+) {
+  if (coordSystem === 'pixel') {
+    const cornerstone = external.cornerstone;
+
+    start = cornerstone.pixelToCanvas(element, start);
+    end = cornerstone.pixelToCanvas(element, end);
+  }
+
+  //  Calc midle in start and end:
+  const midX = end.x + (start.x - end.x) / 2;
+  //  Let midY = end.y + (end.y - start.y) / 2;
+
+  //  Render:
+  path(context, options, context => {
+    context.moveTo(start.x, start.y);
+    context.lineTo(midX, start.y);
+    context.lineTo(midX, end.y);
+    context.lineTo(end.x, end.y);
+  });
+}
diff --git a/src/drawing/index.js b/src/drawing/index.js
index 5fdc4f2dc..dc9bd4855 100644
--- a/src/drawing/index.js
+++ b/src/drawing/index.js
@@ -33,6 +33,7 @@ import path from './path.js';
 import setShadow from './setShadow.js';
 import transformCanvasContext from './transformCanvasContext.js';
 import resetCanvasContextTransform from './resetCanvasContextTransform.js';
+import drawHeight from './drawHeight.js';
 
 // Named exports
 export {
@@ -56,4 +57,5 @@ export {
   setShadow,
   transformCanvasContext,
   resetCanvasContextTransform,
+  drawHeight,
 };
diff --git a/src/index.js b/src/index.js
index 6e8b961b0..110580878 100644
--- a/src/index.js
+++ b/src/index.js
@@ -87,6 +87,7 @@ import {
   ProbeTool,
   RectangleRoiTool,
   TextMarkerTool,
+  HeightTool,
 } from './tools/annotation/index.js';
 import {
   BrushTool,
@@ -223,6 +224,7 @@ const cornerstoneTools = {
   ProbeTool,
   RectangleRoiTool,
   TextMarkerTool,
+  HeightTool,
   // ~ Segmentation Tools
   BrushTool,
   SphericalBrushTool,
@@ -331,6 +333,7 @@ export {
   ProbeTool,
   RectangleRoiTool,
   TextMarkerTool,
+  HeightTool,
   // ~ Segmentation Tools
   BrushTool,
   SphericalBrushTool,
diff --git a/src/lib.js b/src/lib.js
index 6539446ee..680624f35 100644
--- a/src/lib.js
+++ b/src/lib.js
@@ -35,6 +35,7 @@ import {
   fillOutsideRect,
   fillBox,
   fillTextLines,
+  drawHeight,
 } from './drawing/index.js';
 import { clip, clipToBox, clipBoxToDisplayedArea } from './util/clip.js';
 import debounce from './util/debounce';
@@ -131,6 +132,7 @@ export const lib = {
   'drawing/drawLinkedTextBox': drawLinkedTextBox,
   'drawing/drawHandles': drawHandles,
   'drawing/textBoxWidth': textBoxWidth,
+  'drawing/drawHeight': drawHeight,
 
   'util/getActiveTool': getActiveTool,
   'util/getLuminance': getLuminance,
diff --git a/src/tools/annotation/HeightTool.js b/src/tools/annotation/HeightTool.js
new file mode 100644
index 000000000..e1a88795c
--- /dev/null
+++ b/src/tools/annotation/HeightTool.js
@@ -0,0 +1,292 @@
+import BaseAnnotationTool from '../base/BaseAnnotationTool.js';
+// State
+import { getToolState } from './../../stateManagement/toolState.js';
+import toolStyle from './../../stateManagement/toolStyle.js';
+import toolColors from './../../stateManagement/toolColors.js';
+// Drawing
+import {
+  getNewContext,
+  draw,
+  setShadow,
+  drawHeight,
+  drawLinkedTextBox,
+  drawHandles,
+} from './../../drawing/index.js';
+import lineSegDistance from './../../util/lineSegDistance.js';
+import { lengthCursor } from '../cursors/index.js';
+import { getLogger } from '../../util/logger.js';
+import getPixelSpacing from '../../util/getPixelSpacing';
+import throttle from '../../util/throttle';
+import { getModule } from '../../store/index';
+
+const logger = getLogger('tools:annotation:HeightTool');
+
+/**
+ * @public
+ * @class HeightTool
+ * @memberof Tools.Annotation
+ * @classdesc Tool for measuring height.
+ * @extends Tools.Base.BaseAnnotationTool
+ */
+export default class HeightTool extends BaseAnnotationTool {
+  // Constructor
+  constructor(props = {}) {
+    const defaultProps = {
+      name: 'Height',
+      supportedInteractionTypes: ['Mouse', 'Touch'],
+      svgCursor: lengthCursor,
+      configuration: {
+        drawHandles: true,
+        drawHandlesOnHover: false,
+        hideHandlesIfMoving: false,
+        renderDashed: false,
+        digits: 2,
+      },
+    };
+
+    super(props, defaultProps);
+
+    this.throttledUpdateCachedStats = throttle(this.updateCachedStats, 110);
+  }
+
+  createNewMeasurement(eventData) {
+    const goodEventData =
+      eventData && eventData.currentPoints && eventData.currentPoints.image;
+
+    if (!goodEventData) {
+      logger.error(
+        `required eventData not supplied to tool ${this.name}'s createNewMeasurement`
+      );
+
+      return;
+    }
+
+    const { x, y } = eventData.currentPoints.image;
+
+    return {
+      visible: true,
+      active: true,
+      color: undefined,
+      invalidated: true,
+      handles: {
+        start: {
+          x,
+          y,
+          highlight: true,
+          active: false,
+        },
+        end: {
+          x,
+          y,
+          highlight: true,
+          active: true,
+        },
+        textBox: {
+          active: false,
+          hasMoved: false,
+          movesIndependently: false,
+          drawnIndependently: true,
+          allowedOutsideImage: true,
+          hasBoundingBox: true,
+        },
+      },
+    };
+  }
+
+  /**
+   *
+   *
+   * @param {*} element
+   * @param {*} data
+   * @param {*} coords
+   * @returns {Boolean}
+   */
+  pointNearTool(element, data, coords) {
+    const hasStartAndEndHandles =
+      data && data.handles && data.handles.start && data.handles.end;
+    const validParameters = hasStartAndEndHandles;
+
+    if (!validParameters) {
+      logger.warn(
+        `invalid parameters supplied to tool ${this.name}'s pointNearTool`
+      );
+
+      return false;
+    }
+
+    if (data.visible === false) {
+      return false;
+    }
+
+    return (
+      lineSegDistance(element, data.handles.start, data.handles.end, coords) <
+      25
+    );
+  }
+
+  updateCachedStats(image, element, data) {
+    const { rowPixelSpacing } = getPixelSpacing(image);
+    // Set rowPixelSpacing and columnPixelSpacing to 1 if they are undefined (or zero)
+    //  Axy Y height:
+    const dy =
+      (data.handles.end.y - data.handles.start.y) * (rowPixelSpacing || 1);
+    data.length = Math.abs(dy);
+    data.invalidated = false;
+  }
+
+  renderToolData(evt) {
+    const eventData = evt.detail;
+    const {
+      handleRadius,
+      drawHandlesOnHover,
+      hideHandlesIfMoving,
+      renderDashed,
+      digits,
+    } = this.configuration;
+    const toolData = getToolState(evt.currentTarget, this.name);
+
+    if (!toolData) {
+      return;
+    }
+
+    // We have tool data for this element - iterate over each one and draw it
+    const context = getNewContext(eventData.canvasContext.canvas);
+    const { image, element } = eventData;
+    const { rowPixelSpacing, colPixelSpacing } = getPixelSpacing(image);
+
+    const lineWidth = toolStyle.getToolWidth();
+    const lineDash = getModule('globalConfiguration').configuration.lineDash;
+
+    for (let i = 0; i < toolData.data.length; i++) {
+      const data = toolData.data[i];
+
+      if (data.visible === false) {
+        continue;
+      }
+
+      draw(context, context => {
+        // Configurable shadow
+        setShadow(context, this.configuration);
+
+        const color = toolColors.getColorIfActive(data);
+
+        const lineOptions = { color };
+
+        if (renderDashed) {
+          lineOptions.lineDash = lineDash;
+        }
+
+        // Draw the measurement line height
+        drawHeight(
+          context,
+          element,
+          data.handles.start,
+          data.handles.end,
+          lineOptions,
+          'pixel'
+        );
+
+        // Draw the handles
+        const handleOptions = {
+          color,
+          handleRadius,
+          drawHandlesIfActive: drawHandlesOnHover,
+          hideHandlesIfMoving,
+        };
+
+        if (this.configuration.drawHandles) {
+          drawHandles(context, eventData, data.handles, handleOptions);
+        }
+
+        if (!data.handles.textBox.hasMoved) {
+          const coords = {
+            x: Math.max(data.handles.start.x, data.handles.end.x),
+          };
+
+          // Depending on which handle has the largest x-value,
+          // Set the y-value for the text box
+          if (coords.x === data.handles.start.x) {
+            coords.y = data.handles.start.y;
+          } else {
+            coords.y = data.handles.end.y;
+          }
+
+          data.handles.textBox.x = coords.x;
+          data.handles.textBox.y = coords.y;
+        }
+
+        // Move the textbox slightly to the right and upwards
+        // So that it sits beside the length tool handle
+        const xOffset = 10;
+
+        // Update textbox stats
+        if (data.invalidated === true) {
+          if (data.length) {
+            this.throttledUpdateCachedStats(image, element, data);
+          } else {
+            this.updateCachedStats(image, element, data);
+          }
+        }
+
+        const text = textBoxText(data, rowPixelSpacing, colPixelSpacing);
+
+        drawLinkedTextBox(
+          context,
+          element,
+          data.handles.textBox,
+          text,
+          data.handles,
+          textBoxAnchorPoints,
+          color,
+          lineWidth,
+          xOffset,
+          true
+        );
+      });
+    }
+
+    // - SideEffect: Updates annotation 'suffix'
+    function textBoxText(annotation, rowPixelSpacing, colPixelSpacing) {
+      const measuredValue = _sanitizeMeasuredValue(annotation.length);
+
+      // Measured value is not defined, return empty string
+      if (!measuredValue) {
+        return '';
+      }
+
+      // Set the length text suffix depending on whether or not pixelSpacing is available
+      let suffix = 'mm';
+
+      if (!rowPixelSpacing || !colPixelSpacing) {
+        suffix = 'pixels';
+      }
+
+      annotation.unit = suffix;
+
+      return `${measuredValue.toFixed(digits)} ${suffix}`;
+    }
+
+    function textBoxAnchorPoints(handles) {
+      const midpoint = {
+        x: (handles.start.x + handles.end.x) / 2,
+        y: (handles.start.y + handles.end.y) / 2,
+      };
+
+      return [handles.start, midpoint, handles.end];
+    }
+  }
+}
+
+/**
+ * Attempts to sanitize a value by casting as a number; if unable to cast,
+ * we return `undefined`
+ *
+ * @param {*} value
+ * @returns a number or undefined
+ */
+function _sanitizeMeasuredValue(value) {
+  const parsedValue = Number(value);
+  const isNumber = !isNaN(parsedValue);
+
+  return isNumber ? parsedValue : undefined;
+}
diff --git a/src/tools/annotation/HeightTool.test.js b/src/tools/annotation/HeightTool.test.js
new file mode 100644
index 000000000..070f684db
--- /dev/null
+++ b/src/tools/annotation/HeightTool.test.js
@@ -0,0 +1,215 @@
+import HeightTool from './HeightTool.js';
+import { getToolState } from './../../stateManagement/toolState.js';
+import { getLogger } from '../../util/logger.js';
+
+jest.mock('../../util/logger.js');
+jest.mock('./../../stateManagement/toolState.js', () => ({
+  getToolState: jest.fn(),
+}));
+
+jest.mock('./../../importInternal.js', () => ({
+  default: jest.fn(),
+}));
+
+jest.mock('./../../externalModules.js', () => ({
+  cornerstone: {
+    metaData: {
+      get: jest.fn(),
+    },
+  },
+}));
+
+const badMouseEventData = 'hello world';
+const goodMouseEventData = {
+  currentPoints: {
+    image: {
+      x: 0,
+      y: 0,
+    },
+  },
+  viewport: {
+    rotation: 0,
+  },
+};
+
+const image = {
+  rowPixelSpacing: 0.8984375,
+  columnPixelSpacing: 0.8984375,
+};
+
+describe('HeightTool.js', () => {
+  describe('default values', () => {
+    it('has a default name of "Height"', () => {
+      const defaultName = 'Height';
+      const instantiatedTool = new HeightTool();
+
+      expect(instantiatedTool.name).toEqual(defaultName);
+    });
+
+    it('can be created with a custom tool name', () => {
+      const customToolName = { name: 'customToolName' };
+      const instantiatedTool = new HeightTool(customToolName);
+
+      expect(instantiatedTool.name).toEqual(customToolName.name);
+    });
+  });
+
+  describe('createNewMeasurement', () => {
+    it('emits console error if required eventData is not provided', () => {
+      const instantiatedTool = new HeightTool('toolName');
+      const logger = getLogger();
+
+      instantiatedTool.createNewMeasurement(badMouseEventData);
+
+      expect(logger.error).toHaveBeenCalled();
+      expect(logger.error.mock.calls[0][0]).toContain(
+        'required eventData not supplied to tool'
+      );
+    });
+
+    // Todo: create a more formal definition of a tool measurement object
+    it('returns a tool measurement object', () => {
+      const instantiatedTool = new HeightTool('toolName');
+
+      const toolMeasurement = instantiatedTool.createNewMeasurement(
+        goodMouseEventData
+      );
+
+      expect(typeof toolMeasurement).toBe(typeof {});
+    });
+
+    it("returns a measurement with a start and end handle at the eventData's x and y", () => {
+      const instantiatedTool = new HeightTool('toolName');
+
+      const toolMeasurement = instantiatedTool.createNewMeasurement(
+        goodMouseEventData
+      );
+      const startHandle = {
+        x: toolMeasurement.handles.start.x,
+        y: toolMeasurement.handles.start.y,
+      };
+      const endHandle = {
+        x: toolMeasurement.handles.end.x,
+        y: toolMeasurement.handles.end.y,
+      };
+
+      expect(startHandle.x).toBe(goodMouseEventData.currentPoints.image.x);
+      expect(startHandle.y).toBe(goodMouseEventData.currentPoints.image.y);
+      expect(endHandle.x).toBe(goodMouseEventData.currentPoints.image.x);
+      expect(endHandle.y).toBe(goodMouseEventData.currentPoints.image.y);
+    });
+
+    it('returns a measurement with a textBox handle', () => {
+      const instantiatedTool = new HeightTool('toolName');
+
+      const toolMeasurement = instantiatedTool.createNewMeasurement(
+        goodMouseEventData
+      );
+
+      expect(typeof toolMeasurement.handles.textBox).toBe(typeof {});
+    });
+  });
+
+  describe('pointNearTool', () => {
+    let element, coords;
+
+    beforeEach(() => {
+      element = jest.fn();
+      coords = jest.fn();
+    });
+
+    // Todo: Not sure we want all of our methods to check for valid params.
+    it('emits a console warning when measurementData without start/end handles are supplied', () => {
+      const instantiatedTool = new HeightTool('toolName');
+      const noHandlesMeasurementData = {
+        handles: {},
+      };
+      const logger = getLogger();
+
+      instantiatedTool.pointNearTool(element, noHandlesMeasurementData, coords);
+
+      expect(logger.warn).toHaveBeenCalled();
+      expect(logger.warn.mock.calls[0][0]).toContain('invalid parameters');
+    });
+
+    it('returns false when measurement data is null or undefined', () => {
+      const instantiatedTool = new HeightTool('toolName');
+      const nullMeasurementData = null;
+
+      const isPointNearTool = instantiatedTool.pointNearTool(
+        element,
+        nullMeasurementData,
+        coords
+      );
+
+      expect(isPointNearTool).toBe(false);
+    });
+
+    it('returns false when measurement data is not visible', () => {
+      const instantiatedTool = new HeightTool('toolName');
+      const notVisibleMeasurementData = {
+        visible: false,
+      };
+
+      const isPointNearTool = instantiatedTool.pointNearTool(
+        element,
+        notVisibleMeasurementData,
+        coords
+      );
+
+      expect(isPointNearTool).toBe(false);
+    });
+  });
+
+  describe('updateCachedStats', () => {
+    let element;
+
+    beforeEach(() => {
+      element = jest.fn();
+    });
+
+    it('should calculate and update annotation value', () => {
+      const instantiatedTool = new HeightTool('toolName');
+
+      const data = {
+        handles: {
+          start: {
+            x: 166.10687022900754,
+            y: 90.8702290076336,
+          },
+          end: {
+            x: 145.58778625954199,
+            y: 143.63358778625957,
+          },
+        },
+      };
+
+      instantiatedTool.updateCachedStats(image, element, data);
+      expect(data.length.toFixed(2)).toEqual('47.40');
+
+      data.handles.start.x = 138.74809160305347;
+      data.handles.start.y = 71.32824427480917;
+      data.handles.end.x = 79.14503816793899;
+      data.handles.end.y = 121.16030534351145;
+
+      instantiatedTool.updateCachedStats(image, element, data);
+      expect(data.length.toFixed(2)).toEqual('44.77');
+    });
+  });
+
+  describe('renderToolData', () => {
+    it('returns undefined when no toolData exists for the tool', () => {
+      const instantiatedTool = new HeightTool('toolName');
+      const mockEvent = {
+        detail: undefined,
+        currentTarget: undefined,
+      };
+
+      getToolState.mockReturnValueOnce(undefined);
+
+      const renderResult = instantiatedTool.renderToolData(mockEvent);
+
+      expect(renderResult).toBe(undefined);
+    });
+  });
+});
diff --git a/src/tools/annotation/index.js b/src/tools/annotation/index.js
index 1ae30920c..13c158930 100644
--- a/src/tools/annotation/index.js
+++ b/src/tools/annotation/index.js
@@ -9,6 +9,7 @@ import LengthTool from './LengthTool.js';
 import ProbeTool from './ProbeTool.js';
 import RectangleRoiTool from './RectangleRoiTool.js';
 import TextMarkerTool from './TextMarkerTool.js';
+import HeightTool from './HeightTool.js';
 
 // Named Exports
 export { default as AngleTool } from './AngleTool.js';
@@ -22,6 +23,7 @@ export { default as LengthTool } from './LengthTool.js';
 export { default as ProbeTool } from './ProbeTool.js';
 export { default as RectangleRoiTool } from './RectangleRoiTool.js';
 export { default as TextMarkerTool } from './TextMarkerTool.js';
+export { default as HeightTool } from './HeightTool.js';
 
 // Namespace, default export
 export default {
@@ -36,4 +38,5 @@ export default {
   ProbeTool,
   RectangleRoiTool,
   TextMarkerTool,
+  HeightTool,
 };