A multi-piece bottom trim member secures a curved sheet element such as a boat windshield on a surface such as a boat hull. The lands of the tie bar die connect with the leads of the unit to form switches. In the ridge the first sourcedrain region can be formed at one lateral end of the ridge and the second sourcedrain region can be formed at another lateral end of the ridge. The authentication node can then receive the mobile network internet node key transferred from the service node. Another one of these processes includes repeatedly measuring a parameter related to volume of the dispensing chamber over time.