The present disclosure provides devices, systems, and methods to utilize relative timing offset information reported by one or more mobile devices. The valve includes a housing, a servo spool and a piston positioned within the housing with the piston and the servo spool being movable relative to each other. The measuring device further has a device for processing the oscillation signal by a frequency depending on the oscillation frequency and the excitation frequency. The larger multipurpose heat exchangers such as the vehicle radiator are replaced with smaller single function heat exchangers associated with the smaller electric fans. In one example, the surgical instrument includes portions having different diameters for receiving the different-sized affixation mechanisms for the positioning locators.