Elektrisk vandfald

Danish Instrument Inventory text:

Electrical discharger. "Electrical waterfall". Vacuum jar Dia120-100. At the top a brass collar with stuffing box for brass conductor holding inside the jar a small silvered sphere and 4 circular, horizontal guilded plates , increasing diameters downwards. The conductor tops in a ring as handle for vertical adjustment. Overall H400.Not signedc1800 (g)