Set of three industrial stools

Three vintage industrial steel stools. Artisanal manufacturing made for use in a french metallurgy workshop. Two have inscriptions engraved under the seat: "control" and "equipment" Each stool is built on the same model with strapping at the lower part, curved feet with smooth edges. The structure is extremely strong, rigid and stable. The surface has intense marks of use, and a very aesthetic patina of wear revealing vestiges of blue, gray, green and black paint. Seat height 71.5 cm. Diameter of the seat 35.5 cm. Base diameter 54.5 cm. Total weight about 18 kg.