The TopaqR pressure-analysis system, used in conjunction with PressurexR/Fuji PrescaleR stress indicating films, provides a perspective of the stress distribution and magnitude between contacting and impacting surfaces. The films change color in proportion to the amount of pressure applied to them. Topaq, a WindowsR-based system, scans and interprets the exposed film, rendering digitally enhanced images and statistical reports. The system also can analyze steel mill roller nips, bolted joints and pressure uniformity during compacting in composite manufacturing and measure horn interface pressure during ultrasonic welding and gasket sealing. The system can analyze machine calibration for all types of pressing and forming equipment and the fabrication of plastic injection molds besides heat seal and lamination presses.