a storage for storing a relationship between {HEAD ~ the measurement type} and {TAIL ~ types} of necessary optical parts required for the measurement type in connection with the plurality of the measurement types respectively 
a storage for storing a relationship between { HEAD ~ the measurement type } and { TAIL ~ types } of necessary optical parts required for the measurement type in connection with the plurality of the measurement types respectively
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH