Solar Btu Meter

Ideal for checking thermal window efficiency. • 4 digit LCD reading • Wide spectral range • Cosine corrected • Automatic transmission measurements • Solar energy measurement • Select either W/m2 or Btu / (ft^2 x h) units • Data hold/MAX/MIN/AVG modes • Data Memory and Read function (99 sets) • Auto power-off function Includes: • 4 “AAA” 1.5V Batteries • Tripod mounting screw • Case