Electrosurgery is a means for performing medical operations, with the capability of cutting tissue or coagulating it to prevent blood during surgery. Discarded electrosurgery units (ESUs) can make it to the developing world through the work of charities, non-governmental organizations and other groups; unfortunately, much of it is not fully functional.  This ESU tester costs roughly 1/100 the price of an ESU analyzer used in developed countries, but still provides the essential function: measuring the power output of the ESU.  This information is useful to hospital technicians as they diagnose medical equipment so that they know what repairs or preventative maintenance must be performed.