Between the Covers

Unbound. Enameled metal plaque. Measuring approximately 6" x 4". Light to modest wear, very good or better. Stamped Serial Number "503" and Rotor Size "1." According to a circa 1930 ad we viewed online, "The suspension of the Vibrator Screen by four forged link chains eliminates the possibility of transmitting any lateral vibrations to the supporting structure or building." A handsome little piece of American industrial history.

Item #629641