diff --git a/src/components/three/ModelViewer.tsx b/src/components/three/ModelViewer.tsx
index d3ff94a..20c8f9d 100644
--- a/src/components/three/ModelViewer.tsx
+++ b/src/components/three/ModelViewer.tsx
@@ -267,7 +267,9 @@ function MeasurementOverlay() {
           position={hoverInfo.position}
           text={`${hoverInfo.type === 'hole' ? '⌀ ' : ''}${hoverInfo.value.toFixed(1)} mm`}
           variant="primary"
+          fixed
         />
+
       )}
 
       {/* Pending first point */}