For Impact Printer equipped Dynalyzer III digital displays Greenwich Instrument Company offers a complete range of modifications to Dynalyzer digital displays to make them compatable with OEC Medical Systems Auto-calibration systems. We have just completed the design and completion of a modification of the latest Dynalyzer III digital display with Impact printer in order to preserve printer output, and provide OEC compatabilitly as well. This modification is more complex than prior modifications. Please call for more information.