Gramme System Machine, c. 1880 Early DC electric motor, heavy cast-iron base, ring rotor, wooden belt drive, overall height 16 in. Condition: (3+/...

Elster & Geitel System High-Tension Transformer, c. 1900 Physical demonstration model, an evolution of the Tesla transformer, marked in plaque: "E...

Leybold DC Electric Motor 12 V, maker's plaque "E. Leybold's Nachfolger -Cöln/Rh.", walnut base, overall height 11 ¾ in. - A working physical demo...

Early AEG Electric Motor, c. 1890 Allgemeine Elektricitäts Gesellschaft, Berlin. No. 201815, 110 V, open construction, height 12 ¼ in. Condition: ...

Group of Electric Measuring Instruments 1) Needle galvanometer by Leopolder & Sohn, c. 1900. - 2) Voltmeter and amperemeter by Morlot Maury, Paris...

Electromagnetic Rotating Motor, c. 1860 Probably France, with Ø 3 ¼ in. flywheel and belt pulley, mahogany base and pillar. Working (5 V direct cu...

Electromagnetic Motor, c. 1890 Probably Germany, reversible, cast metal on walnut base, Ø 2 1/5 in. flywheel, 2 electromagnets, size 6 ½ x 3 1/6 i...

"Improved Magneto-Electric Shock Machine", c. 1880 Hand-turned mechanism with two coils, used by quack medics for nervous diseases and numerous ot...

2 Small Toy Motors, c. 1920 Unmarked, direct current, on wooden bases. Condition: (3+/-) 2 kleine Spielzeugmotoren, um 1920 Jeweils unbezeichnet,...

Electromagnetic Motor with Pump, c. 1880 Germany or France, Ø 3 ¾ in. flywheel, 2 gears to the pump, glass cylinder, mahogany base 7 4/5 x 4 ½ in....