This is a device called a Solar Pathfinder, used to define your solar window. With it we can tell how much sun you can collect during any month of the year.
Consulting Services
for Home & Small Business:

·        Renewable Energy (RE) Site Assessments

·        Wind

·        Solar PV

·        Energy Efficiency (EE)

·        Lighting Assessments

·        Passive Solar Design

·        Builder/Contractor Liaison