The high-voltage potentiometer

The author describes a high voltage potentiometer which may be made at reasonable expense consisting of a water resistance potential distributor and a sparking probe potential difference detector. The water resistance consists of a column of water moving slowly through an ample length of garden hose, and tapping in points through which to connect the probe are provided by breaking the hose at regular intervals and connecting it with any of the plain metal connectors found on the market as “hose menders.” The results of an integrity trial are charted in Fig. 2. The device is intended for investigations in which the results are not required to be known within 2 or 3 per cent of their actual value.