9 Measuring, detecting and monitoring instruments for use with x-ray equipment and radiotherapy equipment, namely, indicators and controllers; Electronic controllers for use with x-ray equipment and radiotherapy equipment; Downloadable computer software for controlling and operating x-ray equipment and radiotherapy equipment; scientific research and laboratory apparatus, educational apparatus and simulators, all for use with x-ray equipment and radio therapy equipment, namely, x-ray tubes not for medical purposes, x-ray fluorescence analyzers, exposed x-ray film