This standard specifies, with reference to the UNE 15-300 standard, the geometric verifications and practical tests of radial drills with variable height arm for general use and normal precision, as well as the corresponding admissible differences. 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 organs, etc.), nor that of the characteristics of the machine (speeds, feeds, etc.), examinations that must in general precede those of precision.