An upside-down iron baseplate rests on a surface patterned with alternating silver and wooden tones

An upside-down iron baseplate rests on a surface patterned with alternating silver and wooden tones. The metal plate is tarnished and shows internal components: circular indentations, a prominent central hole, and smaller openings. Fasteners and mechanical attachments are visible at the edges. The plate's surface bears a network of linear channels.