diff --git a/packages/tutorial/config/index.js b/packages/tutorial/config/index.js
index dd57adf7603..897007b858e 100644
--- a/packages/tutorial/config/index.js
+++ b/packages/tutorial/config/index.js
@@ -1,38 +1,36 @@
-import { version } from "../package.json";
+import { version } from '../package.json'
 
 // ?? 🤔 ?? --> https://en.freesewing.dev/packages/core/config
 
 export default {
-  name: "tutorial",
+  name: 'tutorial',
   version,
-  design: "joostdecock",
-  code: "joostdecock",
-  department: "womenswear",
-  type: "pattern",
+  design: 'joostdecock',
+  code: 'joostdecock',
+  department: 'womenswear',
+  type: 'pattern',
   difficulty: 1,
-  tags: [
-    "example",
-  ],
+  tags: ['example'],
   optionGroups: {
-    fit: ["neckRatio", "widthRatio", "lengthRatio"],
-    box: ["size"]
+    fit: ['neckRatio', 'widthRatio', 'lengthRatio'],
+    box: ['size']
   },
-  measurements: ["headCircumference"],
+  measurements: ['head'],
   inject: {
-    step4: "step3",
-    step5: "step4",
-    step6: "step5",
-    step7: "step6",
-    step8: "step7",
-    step9: "step8",
-    step10: "step9",
-    step11: "step10"
+    step4: 'step3',
+    step5: 'step4',
+    step6: 'step5',
+    step7: 'step6',
+    step8: 'step7',
+    step9: 'step8',
+    step10: 'step9',
+    step11: 'step10'
   },
-  parts: ["step1", "step2", "bib"],
+  parts: ['step1', 'step2', 'bib'],
   options: {
     size: { pct: 50, min: 10, max: 100 },
     neckRatio: { pct: 80, min: 70, max: 90 },
     widthRatio: { pct: 45, min: 35, max: 55 },
     lengthRatio: { pct: 75, min: 55, max: 85 }
   }
-};
+}
diff --git a/packages/tutorial/src/bib.js b/packages/tutorial/src/bib.js
index d069a546a3e..54364e96f61 100644
--- a/packages/tutorial/src/bib.js
+++ b/packages/tutorial/src/bib.js
@@ -1,4 +1,4 @@
-export default function(part) {
+export default function (part) {
   let {
     Point,
     points,
@@ -15,11 +15,11 @@ export default function(part) {
 
   // Construct the neck opening
   let tweak = 1
-  let target = (measurements.headCircumference * options.neckRatio) / 4
+  let target = (measurements.head * options.neckRatio) / 4
   let delta
   do {
-    points.right = new Point((tweak * measurements.headCircumference) / 10, 0)
-    points.bottom = new Point(0, (tweak * measurements.headCircumference) / 12)
+    points.right = new Point((tweak * measurements.head) / 10, 0)
+    points.bottom = new Point(0, (tweak * measurements.head) / 12)
 
     points.rightCp1 = points.right.shift(90, points.bottom.dy(points.right) / 2)
     points.bottomCp2 = points.bottom.shift(0, points.bottom.dx(points.right) / 2)
@@ -45,8 +45,8 @@ export default function(part) {
   points.topCp2 = points.bottomCp1.flipY()
 
   // Construct the outline
-  let width = measurements.headCircumference * options.widthRatio
-  let length = measurements.headCircumference * options.lengthRatio
+  let width = measurements.head * options.widthRatio
+  let length = measurements.head * options.lengthRatio
 
   points.topLeft = new Point(width / -2, points.top.y - (width / 2 - points.right.x))
   points.topRight = points.topLeft.shift(0, width)
diff --git a/packages/tutorial/src/step2.js b/packages/tutorial/src/step2.js
index d8062b35696..8861ca5b3a7 100644
--- a/packages/tutorial/src/step2.js
+++ b/packages/tutorial/src/step2.js
@@ -1,8 +1,8 @@
-export default function(part) {
+export default function (part) {
   let { Point, points, Path, paths, measurements } = part.shorthand()
 
-  points.right = new Point(measurements.headCircumference / 10, 0)
-  points.bottom = new Point(0, measurements.headCircumference / 12)
+  points.right = new Point(measurements.head / 10, 0)
+  points.bottom = new Point(0, measurements.head / 12)
 
   points.rightCp1 = points.right.shift(90, points.bottom.dy(points.right) / 2)
   points.bottomCp2 = points.bottom.shift(0, points.bottom.dx(points.right) / 2)
diff --git a/packages/tutorial/src/step3.js b/packages/tutorial/src/step3.js
index 5b16627f432..6139502a8ff 100644
--- a/packages/tutorial/src/step3.js
+++ b/packages/tutorial/src/step3.js
@@ -1,12 +1,12 @@
-export default function(part) {
+export default function (part) {
   let { Point, points, Path, paths, measurements, options } = part.shorthand()
 
   let tweak = 1
-  let target = (measurements.headCircumference * options.neckRatio) / 4
+  let target = (measurements.head * options.neckRatio) / 4
   let delta
   do {
-    points.right = new Point((tweak * measurements.headCircumference) / 10, 0)
-    points.bottom = new Point(0, (tweak * measurements.headCircumference) / 12)
+    points.right = new Point((tweak * measurements.head) / 10, 0)
+    points.bottom = new Point(0, (tweak * measurements.head) / 12)
 
     points.rightCp1 = points.right.shift(90, points.bottom.dy(points.right) / 2)
     points.bottomCp2 = points.bottom.shift(0, points.bottom.dx(points.right) / 2)
diff --git a/packages/tutorial/src/step5.js b/packages/tutorial/src/step5.js
index b19c4efb884..7e850ff0ee3 100644
--- a/packages/tutorial/src/step5.js
+++ b/packages/tutorial/src/step5.js
@@ -1,8 +1,8 @@
-export default function(part) {
+export default function (part) {
   let { Point, points, Path, paths, measurements, options } = part.shorthand()
 
-  let width = measurements.headCircumference * options.widthRatio
-  let length = measurements.headCircumference * options.lengthRatio
+  let width = measurements.head * options.widthRatio
+  let length = measurements.head * options.lengthRatio
 
   points.topLeft = new Point(width / -2, points.top.y - (width / 2 - points.right.x))
   points.topRight = points.topLeft.shift(0, width)