Gamma Ray Calculator Pro - with this application, technicians can accurately calculate the time, distance, exposure for devices with x-rays. The program allows full control over the sources with iridium-192, cobalt-60 and selinium-75. In the calculation of cumbersome formulas, and use calculators of the old type no longer has any need. It is enough to remember some data: thickness, distance and source activity and the program will instantly display the exact time of exposure. The presence of R-factor will measure any type of film, and density.