Apparatus, including a surgical kit, for use with a surgical drill, in the repair of bones using an intramedullary nail insertable into a patient's bone, comprising a rod like device for insertion into the intramedullary nail, the device having a light source emitting electromagnetic non-ionizing radiation in the infrared or visible portions of the electromagnetic spectrum, and the device being positionable so that the light source emits the radiation through a distal transverse hole of the intramedullary nail; and a surgical instrument for exposing an exterior surface of a portion of the bone illuminated by the radiation for view by the surgeon. The surgeon can detect the radiation on the exterior surface of the bone and align the surgical drill to the radiation passing through the transverse hole of the intramedullary nail, permitting accurate drilling of a hole through the bone and passage of the drill through the transverse hole of the intramedullary nail.