working photometric standard

tertiary photometric standard

device calibrated by reference to a secondary photometric standard and typically used, on a day-to-day basis, for photometric measurements

Note 1 to entry: Working photometric standards are typically photometers or light sources.

Note 2 to entry: This entry was numbered 845-05-03 in IEC 60050-845:1987.

Note 3 to entry: This entry was numbered 17-1442 in CIE S 017:2011.

Publication date: 2020-12
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