diff --git a/scos_actions/calibration/tests/test_sensor_calibration.py b/scos_actions/calibration/tests/test_sensor_calibration.py
index 88de63f6..aa29ba81 100644
--- a/scos_actions/calibration/tests/test_sensor_calibration.py
+++ b/scos_actions/calibration/tests/test_sensor_calibration.py
@@ -276,11 +276,17 @@ def test_get_calibration_dict_within_range(self):
             clock_rate_lookup_by_sample_rate=[],
             sensor_uid="TESTING",
         )
+
+        lookup_fail_value = 250.0
         with pytest.raises(CalibrationException) as e_info:
-            _ = cal.get_calibration_dict({"sample_rate": 100.0, "frequency": 250.0})
+            _ = cal.get_calibration_dict(
+                {"sample_rate": 100.0, "frequency": lookup_fail_value}
+            )
         assert e_info.value.args[0] == (
-            f"Could not locate calibration data at 250.0"
-            + f"\nAttempted lookup using key '250.0'"
+            f"Could not locate calibration data at {lookup_fail_value}"
+            + "\nAttempted lookup using keys: "
+            + f"\n\tstr({lookup_fail_value}).lower() = {str(lookup_fail_value).lower()}"
+            + f"\n\tstr(int({lookup_fail_value})) = {int(lookup_fail_value)}"
             + f"\nUsing calibration data: {cal.calibration_data['100.0']}"
         )
 
diff --git a/scos_actions/calibration/tests/test_utils.py b/scos_actions/calibration/tests/test_utils.py
index 15ab29cf..8b6eefcf 100644
--- a/scos_actions/calibration/tests/test_utils.py
+++ b/scos_actions/calibration/tests/test_utils.py
@@ -6,12 +6,17 @@
 class TestCalibrationUtils:
     def test_filter_by_parameter_out_of_range(self):
         calibrations = {200.0: {"some_cal_data"}, 300.0: {"more cal data"}}
+
+        # Also checks error output when missing value is an integer
+        test_value = 400
         with pytest.raises(CalibrationException) as e_info:
-            _ = filter_by_parameter(calibrations, 400.0)
+            _ = filter_by_parameter(calibrations, test_value)
         assert (
             e_info.value.args[0]
-            == f"Could not locate calibration data at 400.0"
-            + f"\nAttempted lookup using key '400.0' and 400.0"
+            == f"Could not locate calibration data at {test_value}"
+            + "\nAttempted lookup using keys: "
+            + f"\n\tstr({test_value}).lower() = {str(test_value).lower()}"
+            + f"\n\tstr(float({test_value})) = {float(test_value)}"
             + f"\nUsing calibration data: {calibrations}"
         )
 
@@ -20,11 +25,16 @@ def test_filter_by_parameter_in_range_requires_match(self):
             200.0: {"Gain": "Gain at 200.0"},
             300.0: {"Gain": "Gain at 300.0"},
         }
+
+        # Check looking up a missing value with a float
+        test_value = 150.0
         with pytest.raises(CalibrationException) as e_info:
-            _ = filter_by_parameter(calibrations, 150.0)
+            _ = filter_by_parameter(calibrations, test_value)
         assert e_info.value.args[0] == (
-            f"Could not locate calibration data at 150.0"
-            + f"\nAttempted lookup using key '150.0' and 150.0"
+            f"Could not locate calibration data at {test_value}"
+            + "\nAttempted lookup using keys: "
+            + f"\n\tstr({test_value}).lower() = {str(test_value).lower()}"
+            + f"\n\tstr(int({test_value})) = {int(test_value)}"
             + f"\nUsing calibration data: {calibrations}"
         )
 
diff --git a/scos_actions/calibration/utils.py b/scos_actions/calibration/utils.py
index a526e7f6..8e6a21dd 100644
--- a/scos_actions/calibration/utils.py
+++ b/scos_actions/calibration/utils.py
@@ -52,12 +52,15 @@ def filter_by_parameter(calibrations: dict, value: Union[float, int, bool]) -> d
     """
     try:
         filtered_data = calibrations.get(str(value).lower(), None)
+        attempts = f"\n\tstr({value}).lower() = {str(value).lower()}"
         if filtered_data is None and isinstance(value, int):
             # Try equivalent float for ints, i.e., match "1.0" to 1
             filtered_data = calibrations.get(str(float(value)), None)
+            attempts += f"\n\tstr(float({value})) = {str(float(value))}"
         if filtered_data is None and isinstance(value, float) and value.is_integer():
             # Check for, e.g., key '25' if value is '25.0'
             filtered_data = calibrations.get(str(int(value)), None)
+            attempts += f"\n\tstr(int({value})) = {str(int(value))}"
         if filtered_data is None:
             raise KeyError
         else:
@@ -70,9 +73,7 @@ def filter_by_parameter(calibrations: dict, value: Union[float, int, bool]) -> d
     except KeyError:
         msg = (
             f"Could not locate calibration data at {value}"
-            + f"\nAttempted lookup using key '{str(value).lower()}'"
-            + f"{f' and {float(value)}' if isinstance(value, int) else ''}"
-            + f"{f' and {int(value)}' if isinstance(value, float) and value.is_integer() else ''}"
+            + f"\nAttempted lookup using keys: {attempts}"
             + f"\nUsing calibration data: {calibrations}"
         )
         raise CalibrationEntryMissingException(msg)