Technosource international, inc supplies portable optical sensing unit. Technosource international, inc offers process control, consumer electronics and medical diagnostics. This portable optical sensing unit helps to provide with an accurate measurement of design and display elements. Measurements can be stored for quick reference on the road or in the shop. Users use it to calibrate video walls and to ensure consistency in scenery painting and refurbishing. Portable optical sensing unit also provides with accurate measurement of irradiance and color temperature.