Refractometers; Rangefinders for golf; Salinometers; Laser rangefinders; Air quality measurement apparatus, namely, particle counters; Measuring apparatus, namely, laser distance meters; Ultrasonic thickness gauges; Electronic ultrasonic test equipment, namely, ultrasonic flaw detectors, thickness testers and hardness testers, for non-medical use; Night vision goggles; Thermal imaging cameras; Range finders for golf; Photographic cameras for the instant production of pictures; Combustible gas...