diff --git a/src/stores/useModelStore.ts b/src/stores/useModelStore.ts
index 450b625..c8fc1ed 100644
--- a/src/stores/useModelStore.ts
+++ b/src/stores/useModelStore.ts
@@ -227,6 +227,8 @@ interface ModelStore {
   clearMeasurements: () => void;
   removeMeasurement: (id: string) => void;
   undoLastMeasurement: () => void;
+  /** Register the current HoverInfo (hole diameter or edge length) as a saved measurement. */
+  registerHoverMeasurement: (info: HoverInfo) => void;
 
 
   compareMode: boolean;