This device 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 two IR measurements: UV, VIS, SOLAR, IR 900-1000nm, and IR 780-1780nm 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, this meter is a must. Glass samples not included.