Bob S. on Jul 10, 2006 - 5:07 AM Have a variant of this model range or similar with transparent body and white head and switch. It is apparent how the circuit is completed when the copper strip contacts the metal "contact plate" behind the reflector when the switch is in the ON position. Contemporary Eveready "economy bright lights" as well as older models such as some of the 2D chrome "Captain" models use similar, if not identical, mechanisms. Send E-Mail Reply to Bob S. Your Name: Your E-Mail Address: Message: >>Original Message on Jul 10, 2006 - 5:07 AM:<br>>>======================<br>>>"Have a variant of this model range or similar with transparent body and white head and switch. It is apparent how the circuit is completed when the copper strip contacts the metal "contact plate" behind the reflector when the switch is in the ON position. Contemporary Eveready "economy bright lights" as well as older models such as some of the 2D chrome "Captain" models use similar, if not identical, mechanisms."