diff --git a/src/util/unit_vector.scad b/src/util/unit_vector.scad
new file mode 100644
index 00000000..444fde74
--- /dev/null
+++ b/src/util/unit_vector.scad
@@ -0,0 +1 @@
+function unit_vector(v) = v / norm(v);
\ No newline at end of file