The subject invention relates to systems and methods that facilitate display, selection, and management of context associated with execution of add-on instructions. A calibration wafer with a reference region including a metal such as Al or Ag for forming a eutectic, and an exposed non-reference region without such a metal, are provided. By doing this, the amount of electric charge that builds up in the fuel when the fuel passes through connecting fuel supply pipes 43a, 43c can be held low. The flexible luminescent sheet conforms to the shape of the three-dimensional curved surface of the measurement object main body.