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slide rules · 2018. 3. 25. · Ci/SfB . (63) UDC: 628.94/095 Illumination Calculator A slide rule specifically designed for the calculation of point illuminances in various planes

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Page 1: slide rules · 2018. 3. 25. · Ci/SfB . (63) UDC: 628.94/095 Illumination Calculator A slide rule specifically designed for the calculation of point illuminances in various planes
Page 2: slide rules · 2018. 3. 25. · Ci/SfB . (63) UDC: 628.94/095 Illumination Calculator A slide rule specifically designed for the calculation of point illuminances in various planes