Rooted gantry arm

Rooted lifting arm on a 2x2m riveted plate base with a rotating brass slew ring, a fat two-section boom of bolted lattice and rolled plate reaching about 6m with a rounded grab cradle and a counterweight drum at the back, copper hydraulic tanks.

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