versatile early 20th century american antique industrial "white" articulating graduated bracket desk mount double arm bracket fabricated by the o.c. white co. of worcester, mass. the multi-purpose swinging arm bracket is supported by an inverted conical-shaped cast iron base containing four pre-drilled holes for mounting securely against the tabletop. the fully adjustable and outstretched arm is comprised of two distinctive cast iron swivel brackets containing deeply embossed manufacturer markings. the outermost bracket supports a diminutive circular-shaped platform once mounted to the underside of an old railroad station telegraph sounder box. the newly added revolving "change" tray or compartment is comprised of mitered joint cedar wood with a darkened finish. each pivoting bracket is mounted on a solid steel pin, whereby movement is achieved by bolted joints controlled by the use of wing nuts. the cast iron components have been brushed down to bare metal and sealed with a clear coat lacquer.