An Instrument for Use in Measuring Electrical Resistance of the Skin

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Abstract
Over a period of yrs. during which a Levine type of dermometer has been used to measure skin resistance under various conditions, it has been found that this instrument has certain disadvantages. It gives accurate readings only up to 45 million ohms and skin resistance may greatly exceed this value in a number of conditions; it is too bulky, fragile, and delicate for portability; and it is too expensive for general use. A new instrument has been designed which is smaller, more rugged, is portable, and has a range of from 1000 to 45 million ohms with an accuracy of 5%. The characterustics and construction of this instrument are described in detail.