A detailed industrial steam boiler crafted for hobby use and diorama display. The miniature depicts a horizontal fire-tube boiler on a skid with a bolted circular smokebox door, top-mounted piping and valve housings, a small auxiliary tank, twin exhaust stacks and rectangular service boxes. These features create a strong industrial silhouette for factory interiors, engine rooms and yard installations. This listing provides a single digital master and includes clear guidance to convert the master to other common hobby scales. At the boiler is sized to sit comfortably alongside buildings, rolling stock and figures while retaining bolt and flange detail. Installation and finishing: the base skid has flat mounting points for fixing to a layout or diorama base. For best results, plan supports beneath the skid and the front smokebox overhang when printing; thin pipework may require gentle cleanup. The readme suggests print orientation and scale-conversion factors to adapt the master to your chosen scale. Use this piece as a focal prop in a factory bay, municipal heating plant or workshop vignette. The sculpt is a generic industrial interpretation rather than a manufacturer-specific unit, making it a flexible element for historical and contemporary steam-era scenes.