Hagner ScreenMaster - Small, Handy Combination System - Datasheet

The Hagner ScreenMaster is a small, handy and very easy-to-use instrument for measurement of luminance as well as illuminance over a range of 0.1-200,000 cd/m² and lux, respectively. With both automatic zeroing and on/off switch, the only controls needed are a four-position range selection switch, a hold button for retaining the displayed value and a switch for selection between luminance and illuminance. The ScreenMaster is provided with two detectors, which both are carefully filtered to give a spectral response close to that of the human eye, as defined in CIE standards.