To shorten time in which a measuring device cannot be used by a work for executing new processing while avoiding unauthorized use of a program, and to certainly and easily execute the work.

A storage part 15 stores a program of processing whose execution is allowed and a program of processing whose execution is restricted, execution restriction processing specification information D0 for specifying the processing whose execution is restricted, and restriction release discrimination information D1 for discriminating whether or not release of execution restriction of the processing is allowed, a processing part 16 executes processing specified that the execution is not restricted based on the information D0 according to the program, and updates the information D0 when execution of processing which is associated with restriction release discrimination information D2 is not restricted when the information D2 input for allowing release of the execution restriction of the processing and the information D1 stored in the storage part 15 satisfy preliminarily regulated conditions.