Actinometers; Distance measuring apparatus; Hygrometers; Laser rangefinders; Level gauges; Level indicators; Measuring apparatus, namely, laser distance meters; Measuring apparatus, namely, angle finders; Measuring apparatus, namely, bevels; Measuring apparatus, namely, rain gauges; Measuring instrumentation and apparatus, namely, digitizers; Telemeters; Antenna parameter measuring apparatus; Bubble levels; Carpenter's levels; Derived-unit measuring machines and apparatus; Plumb levels; Press...

electronic system comprised of a gauge, transmitter and receiver that measures liquid level and temperature in tanks

Electronic Apparatus for Monitoring and Controlling the Density of a Non-Woven Fiber Web