Since 1910， General Tools has grown to become the recognized industry leader for specialty hand tools and instruments. This digital solar power meter measures solar power in units of watts per square meter or Btu/(ft2 x h) and displays readings on a large 4-digit LCD. It is ideal for checking thermal window efficiency.

Measurement range: 0 to 2000 W/sq.m or 0 to 634 Btu/(ft2 x h)

Measurement accuracy: ±10 W/sq.m (±3 btu/(ft.2 x h)) or ±5% of reading， whichever is greater

Uses cosine angular correction

Data hold min/max/avg modes

Data memory and read function (99 sets)

Auto power-off function

Includes tripod mounting screw and a carrying case