A comparison of the measurement characteristics of two circumferential penile transducers.

The measurement characteristics of two transducers which record penile circumference changes were compared. The subject wore two transducers simultaneously while viewing a section of an erotic film. Examination of the data revealed discrepancies in measurement between the two units, but these differences were shown to be statistically nonsignificant. Various measurement characteristics of the devices such as durability, ease of handling, and cost are discussed and recommendations are made to guide the worker in choosing a unit most suitable for clinical and research applications.