[ weighing systems for industrial and agricultural applications; namely, scales, load scales, load cells, transducers, digital indicators, electronic indicators; drawbar dynamometers, test weights, digital and analog weight indicators, remote large displays, in motion weighing devices and coin operated weighing devices; and ] electronic control, measurement and sensing systems for industrial and agricultural applications; namely, ultrasonic sensors, distance measurement sensors, cubic volume measurement apparatus, distance measurement displays, universal distance control systems comprising sensors, microprocessors and displays used to monitor distance of tools relative to agricultural and road building equipment, tillage depth controllers, combine header height controllers, sprayer boom height controllers, conveyor load controllers, bin height sensors, collision avoidance sensors, microprocessors, alarms and displays, proximity detectors, grain loss monitors, sprayer monitors, shaft monitors and alarms, acre meters, slipmonitors, velocity sensors, efficiency meters; namely, sensors, microprocessors, and displays for measuring fuel efficiency of devices powered by internal combustion engines, tractor monitors, bin level sensors, auto shut down systems comprising sensors, microprocessors, and controls for shutting down equipment under predetermined conditions, bin temperature sensors and variable rate application controllers

servicing and repair of such [ weighing systems for industrial and agricultural applications and such] electronic control, measurement and sensing systems