A numerical control equipment comprises a control section for applying to a drive motor for driving a table on which an object under measurement is placed a movement instruction for moving said object to a theoretical position, a position register for receiving a detection signal outputted by a position sensor adapted to detect the position of the table, a memory unit for storing instruction data separately according to functions and uses, and a measuring head for measuring the difference between the stop position of the object and a reference position simultaneously with positioning of the object to the theoretical position, wherein said control unit operates a measurement value provided by the measuring head and a register value of the position register and rewrites the contents of addresses provided separately according to functions and uses in the memory unit with an operated value as a measurement result.