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Photoelectric cells
Autoclave
Streakscopes (streak cameras)
Spectrometers, optical
Spectrometers, grating
Spectrometers, nuclear magnetic resonance (NMR)
Spectrometers, fluid analysing
Spectrometers, sound
Spectrometers, photon correlation
Spectroradiometers
Spectrophotometers, ultraviolet (UV)
Spectrophotometers, infrared
Spectrophotometers, visual
Spectrophotometers, flame
Spectrophotometers, atomic absorption
Spectrophotometers, nuclear magnetic resonance (NMR)
Spectrophotometers, scanning, computer aided for colour systems
Spectrographs, X-ray diffraction and X-ray diffractometers
Spectroscopes
Spectroscopes, pocket
Spectrographs, quartz
Spectrographs, glass
Spectrographs, grating
Spectrographs, infrared
Spectrographs, Littrow
Spectrographs, Raman
Spectrographs, comparison
Spectrographs, direct reading
Analysers, spectrographic emission
Spectrohelioscopes and spectroheliographs
Atmospheric electricity monitoring equipment
Barometers
Barometers, test bench
Barometers, recording
Barographs
Meteorographs
Dew gauges, dew point indicators, meteorological
Evaporimeters, meteorological
Hygrometers
Hygrometers, recording (hygrographs), meteorological
Hygrometers, alarm
Thermo-hygrographs
Barohydrographs
Barothermohygrographs
Rain gauges
Rainfall alarms, meteorological
Rain collectors, meteorological
Snow gauges
Snowfall alarms, meteorological
Haze meters/transmissometers, meteorological
Actinometers, meteorological
Sunshine recorders, meteorological
Pyranometers/solarimeters
Pyrgeometers
Lightning detection systems
Lightning flash location systems
Storm location equipment
Wind speed meters (anemometers) and indicators
Anemometers, recording (anemographs)
Sensors and indicators, ground wind velocity
Wind direction indicators
Cloud direction and speed indicating and recording equipment
Cloud rangefinders
Nephoscopes
LIDAR (light detecting and ranging) systems (laser)
Ceilometers
Tide gauges (marigraphs), meteorological
Atmospheric ionisation measuring instruments
Airborne dust samplers, fall-out samplers
Visibility monitoring devices, meteorological
Balloons, meteorological
Meteorological parachutes
Weather stations, portable
Weather stations, mobile
Weather stations, fixed
Weather stations, independent
Map plotting/spotting instruments and equipment
Barometric transmitting instruments
Meteorological data transmission equipment
Meteorological data acquisition equipment, computerised
Receiving stations and equipment, meteorological data
Radio transmission equipment, meteorological
Radio telemetry equipment, meteorological
Luminance meters
Multiplexers, optical
Lux-meters
Luminescence meters
Glossimeters
Autocollimators
Collimators, optical
Polarimeters, polariscopes and spectropolarimeters
Radiometers
Monochromators
Bolometers
Telespectroradiometers
Interferometers and interferoscopes
Scatterometers, optical research
Measuring and analysing instrument stocks
Cabinets or enclosures, metal, for gas, water and electricity meters
Electrical testing & measuring equipment
Laboratory glassware & equipment