cie

17-29-068

working plane

work plane

utilization plane

reference surface defined as the plane at which work is usually done

Note 1 to entry: This entry was numbered 845-09-50 in IEC 60050-845:1987.

Note 2 to entry: This entry was numbered 17-1443, 17-1440, and 17-1384 in CIE S 017:2011.

Publication date: 2020-12
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