Review on Handheld Pyranometer Measurement Radiation Insolation by Chris Shepherd

This tool was purchased to try out and assess the position of solar panels for installation. The gauge was easy to use, gave good readings, and helped me estimate the angles of my backyard pergola. The only thing I want is to correlate the meter readings with the actual performance of the solar panel. Once my solar system is installed, I can compare the meter reading with the actual performance of the solar panel.