
About
A 6.9 m lower quadrant semaphore signal on a riveted lattice post: a signal arm at danger on a named pivot node, a two lens spectacle plate, a lamp case, a ladder to the arm and a balance lever at the foot. Rotate the signal-arm node about X to clear the signal. Bounding size 1.93 x 6.90 x 0.96 m (X x Y x Z). Metre units, +Y up, +Z forward, resting at y=0. Named pivot nodes: signal-arm. Rigid node-transform clips: trigger. No skinning. No collision or navigation data.
Use with an AI agent
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Use the “Lower quadrant semaphore signal (Steam Era Railway and Rolling Stock)” asset in my project. Model: https://cdn.3dassets.dev/assets/14746/v1/model.glb Asset page: https://3dassets.dev/assets/steam-era-railway-and-rolling-stock-semaphore-signal-9ca4609d Description: A lattice post semaphore signal with the arm at danger, spectacle plate, lamp and ladder. - Dimensions (X × Y × Z): 1.935 × 6.9 × 0.956 metres - Triangles: 1.0k - Animations: trigger - Licence: CC0 1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/) - Loading: Three.js GLTFLoader; no additional decoders required.
Also available as JSON, Markdown, or via the MCP server.
Import manually
Choose your framework, then copy the code into your project to load the asset.
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'
import { AnimationMixer } from 'three'
let mixer
const loader = new GLTFLoader()
loader.load('https://cdn.3dassets.dev/assets/14746/v1/model.glb', (gltf) => {
scene.add(gltf.scene)
mixer = new AnimationMixer(gltf.scene)
mixer.clipAction(gltf.animations[0]).play()
})
// Call from your render loop; deltaSeconds is time since the previous frame.
function updateAssetAnimation(deltaSeconds) {
mixer?.update(deltaSeconds)
}Common questions
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Do I need Draco, Meshopt or KTX2 to load it?
Lower quadrant semaphore signal (Steam Era Railway and Rolling Stock)
A lattice post semaphore signal with the arm at danger, spectacle plate, lamp and ladder.