The RDM-1 Radiation Dose Meter is designed to improve efficiency and quality of radiographic operations by eliminating the need for re-shots. Re-shots are often required if the radiographer mis-calculates the exposure. This can occur if he is given the wrong pipe-wall thickness, or the pipe is full of liquid for instance. With the RDM-1 the radiographer does not need to know the wall thickness, what is in the pipe, or even the source strength. He just watches the display until the dose reaches the appropriate dose for the film type used. The detector wand is placed beside, or just behind the film during the exposure and the 100' or 150' cable is fed back to the display unit which is monitored by the radiographer during the exposure. When the display has reached the target exposure, he terminates the shot. This should lead to perfect radiographs every time.