Whenever users are trying to make clear enough dot measurement under all kinds of night version fields, it is far more enough to reach with a simple laser pointer or other manual dot projecting tool. After continuous technical innovation of 780nm infrared laser diode tech and qualified optic lens, it is being made into the most practically used dot measuring tool of 780nm infrared laser diode module. Any time it is operating with those of night version device and external electric power… Continue