Gossen Mavo-Spot 2 USB - Manual (Page 12)

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GOSSEN Foto- und Lichtmesstechnik GmbH
4.3.1 Ratio A/B
This function is used, for example, for contrast measurements and luminance distribution at workstations.
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The larger of the two measured values is always used as a dividend; i.e. if measured value B is larger than
measured value A, the ratio of the two measured values is calculated as B ÷ A.