Available: In stock
Transport: delivery by UPS, FedEx
Description : This wide spectrum digital meter measures solar radient energy intensity directly transmitted through glass (or the film-glass combination) in units of BTUs per square foot per hour or watts per square foot. Effective tool showing the relative effectiveness of variious films in blocking solar radient heat. Especially useful for showing how a very dark eyed film may allow far more enrgy to pass through than a much lighter metalic film. Powerd by a 9-volt alkaline battery (included).