Electrical Thermometer Thermocouples Dr Peter Nathan's Electrical Thermometer Thermocouples. "A machine for taking temperature of different parts of the body. Power cable plugs into main unit. Long adapter with buttons on top plugs into main unit. Long black cables with wire on the end are inserted into the adapter and the relevant button pressed. More than one cable can be used at the same time. The wire ends are placed in different parts of the body. In clear plastic box and bag.