Glass globe with an iron axis and wooden end caps. There is an integral 3-sheave pulley on one cap. Unmarked except for an old, but not original, paper label associating it with David Rittenhouse. (Robert P. Multhauf, "Catalogue of Instruments and Models," 1961).

Circular glass plate on spindle turning through four leather-covered pads to generate static electricity. Two of the pads marked "Haut" and "Bas." Standing on extended wooden platform. Conductors and other attachments are missing.

Unmarked except for a brass plaque (not original) stating that the battery was used by Benjamin Franklin. It contains thirty-five jars in seven rows of five, each jar having a height of 12 1/4" and a 2" square cross-section. Each is covered with foil to a height of about 9", and has a wooden cap from which contact wires project within. Through wires laid across the top, the jars are connected in series. This battery has been restored at some point in the past. Fifteen of the Leyden jars appear to be original; twenty are facsimiles and are so marked by a diamond point inscription on one side. The facsimiles were made in a mold which left a burr not present in the original, and are covered with foil on the outside only. (Robert P. Multhauf, "Catalogue of Instruments and Models," 1961).

Hand-blown, green glass tube, rounded and sealed at both ends. One end is chipped. Unmarked. (Robert P. Multhauf, "Catalogue of Instruments and Models," 1961).

Rotating drum, grooved and marked from 0 to 100 in 1-unit increments around circumference. Drum is turned with a protruding knob. Wood stand is marked "Fritz Kohler Leipzig."

Large, center bowl with black and white floral designs on interior and exterior. In the center, an image of Benjamin Franklin flying a kite in a thunderstorm, with a seaside town, fort, and sailboats in the background. No manufacturer marks on underside. Previously broken and repaired.