diff --git a/nionswift_plugin/nion_eels_analysis/LiveThickness.py b/nionswift_plugin/nion_eels_analysis/LiveThickness.py
index 0dbda6a..29bbe37 100755
--- a/nionswift_plugin/nion_eels_analysis/LiveThickness.py
+++ b/nionswift_plugin/nion_eels_analysis/LiveThickness.py
@@ -66,6 +66,7 @@ def commit(self) -> None:
             thickness_interval.graphic_id = "thickness_interval"
             thickness_interval.label = f"{self.__thickness:0.4f}"
             thickness_interval._graphic.color = "#CE00AC"
+            thickness_interval._graphic.role = "measurement"
 
 
 ComputationCallable = typing.Callable[[Symbolic._APIComputation], Symbolic.ComputationHandlerLike]
diff --git a/nionswift_plugin/nion_eels_analysis/LiveZLP.py b/nionswift_plugin/nion_eels_analysis/LiveZLP.py
index 7030700..20bf53a 100755
--- a/nionswift_plugin/nion_eels_analysis/LiveZLP.py
+++ b/nionswift_plugin/nion_eels_analysis/LiveZLP.py
@@ -47,6 +47,7 @@ def commit(self) -> None:
             zlp_interval.interval = start, end
             zlp_interval.graphic_id = "zlp_interval"
             zlp_interval._graphic.color = "black"
+            zlp_interval._graphic.role = "measurement"
 
 ComputationCallable = typing.Callable[[Symbolic._APIComputation], Symbolic.ComputationHandlerLike]