diff --git a/overlay/frameworks/base/packages/SystemUI/res/values/dimens.xml b/overlay/frameworks/base/packages/SystemUI/res/values/dimens.xml
index b8da10d..6eae84c 100644
--- a/overlay/frameworks/base/packages/SystemUI/res/values/dimens.xml
+++ b/overlay/frameworks/base/packages/SystemUI/res/values/dimens.xml
@@ -33,4 +33,8 @@
 
     <!-- Margin on the right side of the system icon group on Keyguard. -->
     <dimen name="system_icons_keyguard_padding_end">@dimen/status_bar_padding_end</dimen>
+
+    <!-- Microns/ums (1000 um = 1mm) per pixel for the given device. If unspecified, UI that
+         relies on this value will not be sized correctly. -->
+    <item name="pixel_pitch" format="float" type="dimen">65.74</item>
 </resources>