diff --git a/packages/frontend/assets/room/objects/radiometer/radiometer.blend b/packages/frontend/assets/room/objects/radiometer/radiometer.blend
new file mode 100644
index 0000000000..b913110558
Binary files /dev/null and b/packages/frontend/assets/room/objects/radiometer/radiometer.blend differ
diff --git a/packages/frontend/assets/room/objects/radiometer/radiometer.glb b/packages/frontend/assets/room/objects/radiometer/radiometer.glb
new file mode 100644
index 0000000000..2750938210
Binary files /dev/null and b/packages/frontend/assets/room/objects/radiometer/radiometer.glb differ
diff --git a/packages/frontend/src/utility/room/object-defs.ts b/packages/frontend/src/utility/room/object-defs.ts
index b7809f9af0..abf241416c 100644
--- a/packages/frontend/src/utility/room/object-defs.ts
+++ b/packages/frontend/src/utility/room/object-defs.ts
@@ -51,6 +51,7 @@ import { plant } from './objects/plant.js';
 import { plant2 } from './objects/plant2.js';
 import { poster } from './objects/poster.js';
 import { powerStrip } from './objects/powerStrip.js';
+import { radiometer } from './objects/radiometer.js';
 import { rolledUpPoster } from './objects/rolledUpPoster.js';
 import { roundRug } from './objects/roundRug.js';
 import { router } from './objects/router.js';
@@ -118,6 +119,7 @@ export const OBJECT_DEFS = [
 	plant2,
 	poster,
 	powerStrip,
+	radiometer,
 	rolledUpPoster,
 	roundRug,
 	router,
diff --git a/packages/frontend/src/utility/room/objects/radiometer.ts b/packages/frontend/src/utility/room/objects/radiometer.ts
new file mode 100644
index 0000000000..875be5f1d6
--- /dev/null
+++ b/packages/frontend/src/utility/room/objects/radiometer.ts
@@ -0,0 +1,35 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import * as BABYLON from '@babylonjs/core';
+import { defineObject } from '../engine.js';
+
+export const radiometer = defineObject({
+	id: 'radiometer',
+	name: 'radiometer',
+	options: {
+		schema: {},
+		default: {},
+	},
+	placement: 'top',
+	createInstance: ({ scene, model }) => {
+		const vanes = model.findTransformNode('__X_VANES__');
+		model.bakeExcludeMeshes = [...vanes.getChildMeshes()];
+
+		return {
+			onInited: () => {
+				vanes.rotation = vanes.rotationQuaternion != null ? vanes.rotationQuaternion.toEulerAngles() : vanes.rotation;
+				const anim = new BABYLON.Animation('', 'rotation.y', 60, BABYLON.Animation.ANIMATIONTYPE_FLOAT, BABYLON.Animation.ANIMATIONLOOPMODE_CYCLE);
+				anim.setKeys([
+					{ frame: 0, value: 0 },
+					{ frame: 240, value: Math.PI * 2 },
+				]);
+				vanes.animations = [anim];
+				scene.beginAnimation(vanes, 0, 240, true);
+			},
+			interactions: {},
+		};
+	},
+});