The Model L706 Patient Penetrometer Kit provides the necessary patient phantom attenuation material to test the exposure rate output of any standard or digital fluoroscopic system. The Penetrometer Kit is designed to work with most any x-ray exposure or multimeter measurement device. The kit consists of (four) 17.8 cm x 17.8 cm x 0.95 cm (7″ x 7″ x 0.38″) plates of high-purity (1100) aluminum. These plates simulate the attenuation of 26 cm (10.2″) of water or a very large adult abdomen at 90 kVp. Two of the plates simulate a child abdomen or adult chest. Also included is one lead “stop plate”. The “stop plate” allows the user to evaluate the automatic brightness control at maximum output. Finally, a contrast gradient plate with four holes, each twice the area of the previous smaller hole, is placed between the 0.95 cm (3/8¡±) aluminum plates (two above and two below) to determine the contrast gradient of the image systems.