Method for generation and sale of frankings, which can be used for sending mail from a customer to a receiver. This composite catalytic material can be used to remove or degrade contaminants in water and to remove or degrade carbon monoxide or other airborne contaminants. The indicator translates the rotational position of the shaft into a fluid level. Step two requires generating a second voltage differential between two points of the magnetic sensor by providing a current through the magnetic sensor in a direction having a component transverse to the magnetic field. The number of character display positions is less than the number of character codes in the coded text line.