What is the name of the drawing inspired by the Roman author who detailed descriptions of the laconcium?
Laconicum:  The "laconicum" was usually a circular room with niches in the axes of the diagonals and was covered by a conical roof with a circular opening at the top, according to Vitruvius (v. 10), from which a brazen shield is suspended by chains, capable of being so lowered and raised as to regulate the temperature. Vitruvius: Marcus Vitruvius Pollio (born c. 80–70 BC, died after c. 15 BC), commonly known as Vitruvius, was a Roman author, architect, civil engineer and military engineer during the 1st century BC, known for his multi-volume work entitled "De architectura".
i don't know