Important Oudin Resonator by E. Balzarini

Italian, ca 1900, with brass trade label on coil top... "E>BALZARINI, MILANO". The apparatus is mounted on its original 19 5/8" x 9 7/8" x 3/4" white marble base with cast brass lion feet. On one end of the base is the 7 3/4" diameter x 21" mahogany coil wond with 39 turns of heavy gage copper wire (the inductor in this resonant circuit); next to the coil is a 20 3/4 brass rod with a variable height pick-off to vary the resonant frequency of the apparatus; next to the pickoff is a pair of 10" tall Leyden jars connected by copper wires to the spark gap (capacitors); at the other end of the base is the brass & glass spark gap holder (the excitation source) and a mahogany framed colored glass filter to observe the spark. This exceptional Oudin Resonator is in fine overall condition.