naturally aged vintage american four-legged all-purpose factory assembly line stool attributed to the angle steel stool company, plainwell, mi. the cold-rolled heavy gauge steel overlapping uprights contains closely spaced pre-drilled holes for height adjustment. a multitude of cross-bracing provides added support and stability. original seat replaced long ago with a saddle type (likely from a chair) seat with old gray paint finish. seat height measures 24 1/2 inches.