diff --git a/README.org b/README.org
index 777881f..6bf4cc6 100644
--- a/README.org
+++ b/README.org
@@ -44,18 +44,43 @@ Functional groups
 
 * Misc
 
-** Eurorack Panel Calculator 
+** Eurorack Panel Sizes
 
-#+name: Eurorack Panel Calculator
-#+begin_src python :results output :var hp=4
-width = (hp * 5.08) - 0.3
-u = 3
-height = (u * 44.45) - 4.8
-hole_distance = (u * 44.45) - 10.85
-print("A %dU %dhp panel is %1.2fmm x %1.2fmm" % (u, hp, height, width))
-print("The Holes are %1.2fmm appart" % hole_distance)
+- 3U height = 128.55 +0/-0.15 mm
+- Widths have a tolerance of +0/-0.2 mm
+- Mounting holes have a vertical distance between them of 122.50 ±0.2 mm
+- Widths are calculated as follows:
+
+#+name: Eurorack Panel Width 
+#+begin_src python :results value 
+sizes = [x for x in range(2,37) if x % 2 == 0]
+
+table = []
+table.append(("HP", "Width (mm)"))
+for hp in sizes:
+  width = (hp * 5.08) - 0.3
+  table.append((hp, round(width, 2)))
+
+return table
 #+end_src
 
-#+RESULTS: Eurorack Panel Calculator
-: A 3U 4hp panel is 128.55mm x 20.02mm
-: The Holes are 122.50mm appart
+#+RESULTS: Eurorack Panel Width
+| HP | Width (mm) |
+|  2 |       9.86 |
+|  4 |      20.02 |
+|  6 |      30.18 |
+|  8 |      40.34 |
+| 10 |       50.5 |
+| 12 |      60.66 |
+| 14 |      70.82 |
+| 16 |      80.98 |
+| 18 |      91.14 |
+| 20 |      101.3 |
+| 22 |     111.46 |
+| 24 |     121.62 |
+| 26 |     131.78 |
+| 28 |     141.94 |
+| 30 |      152.1 |
+| 32 |     162.26 |
+| 34 |     172.42 |
+| 36 |     182.58 |