A crystalline substrate based device including a crystalline substrate having formed thereon a microstructure and at least one packaging layer which is formed over the microstructure and defines therewith at least one gap between the crystalline substrate and the at least one packaging layer and at least one opening in the packaging layer communicating with the at least one gap. The platform is used alone or as a module in combination with other such floating platform modules; attaching the modules to form a larger floating platform. Control points are derived from the contours. Moreover, since all of the sensors can be located in the same compartment, the structure of the electrical wiring harnesses can be simplified and can be installed more easily. The connectors are positioned with space between the connectors.