Computer touchscreens; data processing apparatus; electric measuring devices, namely, amplitude sensors, piezoelectric sensors, capacitive sensors, pressure sensors, load electric cells, pressure transducers, digital timers, energy meters for measuring energy usage, power analyzers, infrared thermometers not for medical use, thermocouples, ultrasonic frequency sensors, frequency analyzers, oscilloscopes, linear variable differential transformers (LVDTs), optical sensors; electric apparatus fo...