This standard specifies, with reference to the UNE 15-300 standard, the geometric verifications and practical tests to be carried out on milling machines with a fixed height table with horizontal or vertical spindle, for general use and normal precision, defined in the UNE 15 standard. -301, as well as the corresponding admissible differences. This standard deals with geometric verifications for precision control of milling machines with a fixed height table, with horizontal or vertical spindle. This standard deals exclusively with the control of the precision of the machine. It does not take into account either the examination of the operation (vibrations, abnormal noises, hard points in the movement of the organs, etc.), nor that of its characteristics (speeds, advances, etc.), examinations that must precede those of precision.