diff --git a/js/common/view/PHMeterNode.js b/js/common/view/PHMeterNode.js
index b9bae399..c587ded0 100644
--- a/js/common/view/PHMeterNode.js
+++ b/js/common/view/PHMeterNode.js
@@ -97,7 +97,8 @@ define( require => {
           backgroundFill: 'white',
           backgroundStroke: 'darkGray',
           xMargin: 8,
-          yMargin: 5
+          yMargin: 5,
+          tandem: options.tandem.createTandem( 'numberDisplay' )
         } );
       }
 
diff --git a/js/phet-io/ph-scale-phet-io-elements-baseline.js b/js/phet-io/ph-scale-phet-io-elements-baseline.js
index 00316400..21f1d7d6 100644
--- a/js/phet-io/ph-scale-phet-io-elements-baseline.js
+++ b/js/phet-io/ph-scale-phet-io-elements-baseline.js
@@ -8529,6 +8529,123 @@ window.phet.phetio.phetioElementsBaseline = assert &&
       "phetioStudioControl": true,
       "phetioTypeName": "PropertyIO<BooleanIO>"
     },
+    "phScale.microScreen.view.pHMeterNode.numberDisplay": {
+      "phetioDocumentation": "",
+      "phetioDynamicElement": false,
+      "phetioEventType": "MODEL",
+      "phetioFeatured": false,
+      "phetioHighFrequency": false,
+      "phetioIsArchetype": false,
+      "phetioPlayback": false,
+      "phetioReadOnly": false,
+      "phetioState": false,
+      "phetioStudioControl": true,
+      "phetioTypeName": "NumberDisplayIO"
+    },
+    "phScale.microScreen.view.pHMeterNode.numberDisplay.opacityProperty": {
+      "phetioDocumentation": "Opacity of the parent NodeIO, between 0 (invisible) and 1 (fully visible)",
+      "phetioDynamicElement": false,
+      "phetioEventType": "MODEL",
+      "phetioFeatured": false,
+      "phetioHighFrequency": false,
+      "phetioIsArchetype": false,
+      "phetioPlayback": false,
+      "phetioReadOnly": false,
+      "phetioState": true,
+      "phetioStudioControl": true,
+      "phetioTypeName": "NumberPropertyIO"
+    },
+    "phScale.microScreen.view.pHMeterNode.numberDisplay.pickableProperty": {
+      "phetioDocumentation": "Sets whether the node will be pickable (and hence interactive), see the NodeIO documentation for more details",
+      "phetioDynamicElement": false,
+      "phetioEventType": "MODEL",
+      "phetioFeatured": false,
+      "phetioHighFrequency": false,
+      "phetioIsArchetype": false,
+      "phetioPlayback": false,
+      "phetioReadOnly": false,
+      "phetioState": true,
+      "phetioStudioControl": true,
+      "phetioTypeName": "PropertyIO<NullableIO<BooleanIO>>"
+    },
+    "phScale.microScreen.view.pHMeterNode.numberDisplay.valueText": {
+      "phetioDocumentation": "",
+      "phetioDynamicElement": false,
+      "phetioEventType": "MODEL",
+      "phetioFeatured": false,
+      "phetioHighFrequency": false,
+      "phetioIsArchetype": false,
+      "phetioPlayback": false,
+      "phetioReadOnly": true,
+      "phetioState": false,
+      "phetioStudioControl": true,
+      "phetioTypeName": "TextIO"
+    },
+    "phScale.microScreen.view.pHMeterNode.numberDisplay.valueText.opacityProperty": {
+      "phetioDocumentation": "Opacity of the parent NodeIO, between 0 (invisible) and 1 (fully visible)",
+      "phetioDynamicElement": false,
+      "phetioEventType": "MODEL",
+      "phetioFeatured": false,
+      "phetioHighFrequency": false,
+      "phetioIsArchetype": false,
+      "phetioPlayback": false,
+      "phetioReadOnly": true,
+      "phetioState": true,
+      "phetioStudioControl": true,
+      "phetioTypeName": "NumberPropertyIO"
+    },
+    "phScale.microScreen.view.pHMeterNode.numberDisplay.valueText.pickableProperty": {
+      "phetioDocumentation": "Sets whether the node will be pickable (and hence interactive), see the NodeIO documentation for more details",
+      "phetioDynamicElement": false,
+      "phetioEventType": "MODEL",
+      "phetioFeatured": false,
+      "phetioHighFrequency": false,
+      "phetioIsArchetype": false,
+      "phetioPlayback": false,
+      "phetioReadOnly": true,
+      "phetioState": true,
+      "phetioStudioControl": true,
+      "phetioTypeName": "PropertyIO<NullableIO<BooleanIO>>"
+    },
+    "phScale.microScreen.view.pHMeterNode.numberDisplay.valueText.textProperty": {
+      "phetioDocumentation": "Property for the displayed text",
+      "phetioDynamicElement": false,
+      "phetioEventType": "MODEL",
+      "phetioFeatured": false,
+      "phetioHighFrequency": false,
+      "phetioIsArchetype": false,
+      "phetioPlayback": false,
+      "phetioReadOnly": true,
+      "phetioState": true,
+      "phetioStudioControl": true,
+      "phetioTypeName": "PropertyIO<StringIO>"
+    },
+    "phScale.microScreen.view.pHMeterNode.numberDisplay.valueText.visibleProperty": {
+      "phetioDocumentation": "Controls whether the Node will be visible (and interactive), see the NodeIO documentation for more details.",
+      "phetioDynamicElement": false,
+      "phetioEventType": "MODEL",
+      "phetioFeatured": false,
+      "phetioHighFrequency": false,
+      "phetioIsArchetype": false,
+      "phetioPlayback": false,
+      "phetioReadOnly": true,
+      "phetioState": true,
+      "phetioStudioControl": true,
+      "phetioTypeName": "PropertyIO<BooleanIO>"
+    },
+    "phScale.microScreen.view.pHMeterNode.numberDisplay.visibleProperty": {
+      "phetioDocumentation": "Controls whether the Node will be visible (and interactive), see the NodeIO documentation for more details.",
+      "phetioDynamicElement": false,
+      "phetioEventType": "MODEL",
+      "phetioFeatured": false,
+      "phetioHighFrequency": false,
+      "phetioIsArchetype": false,
+      "phetioPlayback": false,
+      "phetioReadOnly": false,
+      "phetioState": true,
+      "phetioStudioControl": true,
+      "phetioTypeName": "PropertyIO<BooleanIO>"
+    },
     "phScale.microScreen.view.pHMeterNode.opacityProperty": {
       "phetioDocumentation": "Opacity of the parent NodeIO, between 0 (invisible) and 1 (fully visible)",
       "phetioDynamicElement": false,
diff --git a/js/phet-io/ph-scale-phet-io-types.js b/js/phet-io/ph-scale-phet-io-types.js
index 6fb7533e..8d6a91eb 100644
--- a/js/phet-io/ph-scale-phet-io-types.js
+++ b/js/phet-io/ph-scale-phet-io-types.js
@@ -796,6 +796,14 @@ window.phet.phetio.phetioTypes = assert &&
       "supertype": "ObjectIO",
       "typeName": "NullableIO<Vector2IO>"
     },
+    "NumberDisplayIO": {
+      "documentation": "A numeric readout with a background",
+      "events": [],
+      "methodOrder": [],
+      "methods": {},
+      "supertype": "NodeIO",
+      "typeName": "NumberDisplayIO"
+    },
     "NumberIO": {
       "documentation": "Wrapper for the built-in JS number type (floating point, but also represents integers)",
       "events": [],