The SS2450 Solar Spectrum Transmission Meter is the most accurate meter to date. It is the only meter calibrated to ISO9050, NFRC300 and EN410 standards. Effortlessly demonstrate six performance characteristics at a time including ensuring the complete picture of a window film’s performance. Simply slide the glass sample into the opening and see the resulting values displayed. No additional light sources are needed. Everything is self-contained in a single convenient package to visualize the true performance of a glazing system.