inspector.html

<!DOCTYPE html>
<head>
    <title>Inspector</title>
    <link href="../Build/Cesium/Widgets/widgets.css" rel="stylesheet">
    <script type="text/javascript" src="./js/require.min.js" data-main="./js/main"></script>
</head>
<body>
<div id="cesiumContainer"></div>
<script>
    function onload(Cesium) {
        var viewer = new Cesium.Viewer('cesiumContainer');

//        viewer.extend(Cesium.viewerPerformanceWatchdogMixin, {
//                lowFrameRateMessage : 'Why is this going so <em>slowly</em>?'
//        });

        viewer.extend(Cesium.viewerCesiumInspectorMixin);

        viewer.cesiumInspector.viewModel.performance = true;
        viewer.cesiumInspector.viewModel._showPerformance();
        viewer.cesiumInspector.viewModel.update();

        var position = Cesium.Cartesian3.fromDegrees(-123.0744619, 44.0503706, 5000);
        var heading = Cesium.Math.toRadians(135);
        var pitch = 0;
        var roll = 0;
        var orientation = Cesium.Transforms.headingPitchRollQuaternion(position, heading, pitch, roll);

        var entity = viewer.entities.add({
            name : "../Apps/SampleData/models/CesiumAir/Cesium_Air.glb",
            position :  position,
            orientation : orientation,
            model : {
                uri : "../Apps/SampleData/models/CesiumAir/Cesium_Air.glb",
                minimumPixelSize : 128,
                maximumScale : 20000
            }
        });

        viewer.entities.add(entity);
    }
</script>
</body>