A polarization measurement system and method that determines the polarization of a received signal within one received pulse. The device comprises an elongate vibrator module and a handle component configured for releasably engaging and rotationally communicating with the vibrator module. Access may be selectively provided to a last event immediately preceding a merge juncture within the sequential history associated with the first or the second history via the graphical user interface when the merged event is accessed. The flexibility to store and delivertransport only one aqueous solution, instead of requiring the use of two different solutions, is also a benefit. The upper shell half is radially supported by a tip of the spar while the lower shell half is radially loaded by an attachment so that its load is not carried by the upper shell half and the tip of the spar in order to reduce overall stress levels. The controller can maintain the coolant at a preset temperature for optimal operation of the fuel cell stack.