Ross and Carrie Clear Things Up: E-meter Edition

An incredible listener sends Ross and Carrie a vintage Scientology E-Meter, and after screaming with glee, the duo turns it on to do some basic auditing. Then, they compare it to a later model Electropsychometer that a friend has on hand. Will Ross be electrocuted by old wiring? Can Carrie achieve a floating needle? Is the only way out, through?