american industrial gunship gray enameled four-legged stationary factory machinist stool designed and fabricated by the lyon metallic mfg. co., aurora, il. the tubular steel stool contains a circular-shaped seat with adjustable backrest and footrest or heel ring. typical shop wear consistent with age. structurally sound and stable. salvaged from a west side chicago factory specializing in sheet steel fabrication. measures approximately 14 x 14 x 25 inches.