Tank Steam Locomotive

Small six-coupled side-tank steam locomotive about 9 m over buffers, centred on x = 0 with buffer faces at z = +/-4.5 m: three driving axles whose wheels and coupling rods turn on the rig, treads on the 0.30 m rail top with flanges inside the 1.435 m gauge.

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit