title_body: When evaluating the weight of a multirotor, is there a standard way that the components are grouped? Let's say we can all agree on that the frame and landing gear are one group, would you group the motors, props, ESC, and Batteries together, or split them out as four separate items? Does the wiring get weighed as part of the powers system, or is the power wiring its own category? Are flight controls, radios, and camera/gimbal a single group, or are camera/gimbals, sensors or IR cameras considered in their own category like payload? Where does the FPV camera get weighed?  
  
  Or, does every designer/builder tally them up differently?
upvoted_answer: To me the only weight that matters is the total weight of the craft that is airborne.  Or commonly referred to as All Up Weight (AUW).  That is what performance depends on.  That is what regulations are based on ( mostly ).  Anything else is just the weight of individual components in my opinion.