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• n  measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
• n  photographic equipment that measures the intensity of light

• It was a dummy ultraviolet light photometer.
• This unpleasant news was first uncovered last spring when Birmingham's city analyst, armed with a new $1,400 spectro-photometer, began testing vitamin products taken from the .
• Cooper took photometer readings of stars to measure the extent to which his window attenuates light.

• light meter
• exposure meter

News & Articles

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• Hemoglobin Analyzer performs strip-based test.
  Designed for anemia determination, hand-held STAT-Site M Hgb delivers accurate hemoglobin analysis results within 30 seconds from 15 µL of finger-prick whole blood. Portable hemoglobin photometer is maintenance-free and provides step-by-step on-screen instructions. Using just one 3 V Li type battery for every 1,000 tests and with operating temperature range of 16–35°C, analyzer is suitable ...
  June 7, 2013 - ThomasNet

Quotes

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• Bart Bok in The American Enterprise Online
  Bart Bok, one of the greatest astronomers of the twentieth century, said, "When you are in an observatory at three o'clock in the morning, stop your photograph. Stop your photometer. Walk away from the telescope. Walk down the stairs. Walk out the...