Angle gauges; Astronometric measuring machines and instruments; Battery testers; Chronographs for use as specialized time recording apparatuses; Digital multimeters; Distance measuring apparatus; Electric meters; Electric sensors; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Electronic ultrasonic test equipment, namely, ultrasonic flaw detectors, thickness testers and hardness testers, for non-medical use; Flowmeters; Infrared detectors; Lap-counting devices, namely, counters for use during sporting activities; Lasers for measuring purposes; Lasers, not for medical purposes; Level gauges; Magnifying glasses; Measuring rulers; Microscopes; Microscopes and their parts; Optical lenses; Oscillographs; Portable electronic recorder for measuring and recording multiple voltage, current and thermocouple readings from various transducers; Pressure measuring apparatus; scientific instrumentation for measuring weight and chemical levels in water; Scientific and technical apparatus, namely, optical mirrors; Surveying instruments; Technical measuring, testing and checking apparatus and instruments for measuring, testing and checking the temperature, pressure, quantity and concentration of gas and liquids; Voltage stabilizing power supply; Weighing machines; Geiger counters; Thread counters