The Digital "SOLAR TRANSMISSION & POWER METER" incorporates two meters into one. In Power Mode, the meter measures the power per unit area of incident solar radiation reaching the meter's sensing area. In Transmission Mode, the SP2065 is able to calculate the solar transmission percentage associated with a given material. The meter uses a state-of-the-art sensor coupled with microprocessor control to achieve an EASY TO READ hand-held meter. The device may be used to measure the solar characteristics of windows, film or other transparent materials.