A compact industrial steam boiler prop designed for layouts and dioramas. The miniature reproduces layered riveted casings, a domed inspection cover, a network of external piping with flanged joints, visible valve housings and handwheels, all on a low mounting base that makes placement on a floorboard or vignette straightforward. Includes a single master file and conversion notes so you can scale the piece for other layout sizes. The geometry preserves rivet rows, flange detail and service pipes; very small-diameter pipes and valve stems may require thicker slicing or higher-resolution printing to remain robust. For best results, orient with the flattest side down and add supports beneath pipe overhangs and the underside of the dome. Use this prop to populate factory interiors, engine-room dioramas, service yards and workshop vignettes. The compact footprint and dense pipework make it an effective scene anchor for industrial layouts and display pieces.