Pen torches and diagnostic lights are part of the normal medical exam equipment for a doctor. You will find the appropriate pen torch or diagnostic light for examinations in the surgery, hospital and emergency services in our comprehensive range. Diagnostic pen torch is also knows as flashlight or torch it is used as a light source when used with no power. A medical pen torch or flashlight consists of a reflector-mounted light bulb, a transparent cover, a battery and a switch to protect the light source and the reflector. Pen torch basically consists of LED yellow bulb and operated with battery. It is operated with battery and used to check dilation of the pupil and also be used to examine people mouth and throat areas and examine wounds. Hospital pen torch is always available in the medical kit of all the doctors so they can examine frequently the oxygen level of patient.