An actuator for a switch, the actuator being movable between on and off positions against an adjustable resilient bias to provide a first signal when said actuator is in said on position and a second signal when said actuator is in said off position. Heterogeneous data at a plurality of remote nodes is accessed automatically in parallel at high speed using a simple script request containing a data source object name wherein the heterogeneous data is treated as a single data source object, the script further containing code representing a user-defined program to be executed on the data source object. The mounting hole receives the body of the C-type clamp with a clearance fit and with the locking texture in juxtaposition with the anvil of the C-type clamp. The customized look-up tables for the actuators forming the module assembly are retrieved from the database. The cassette is moved, preferably in a stage which rotates the cassette while translating it, so that the head of the confocal microscope provides a linear scan in a direction perpendicular to the wall of the cassette. On the other hand, in the location-blocking service, the service promoter may disclose the mobile subscriber’s identity information to the third party, but not the current physical location of the mobile subscriber.