If users are trying to make clear enough cross line measurement at different work distance, Berlinlasers 5mW to 100mW pro red cross laser alignment with 5V, 9V 1000mA AC/DC adapter has just assured continuous red laser beam emission, and the most complex two perpendicular red lines with accurate 90 degrees. Only if it gets correct output power and makes freely adjusted cross line fineness, this red cross line assures noncontact, high precision and high speed cross line measurement perfectly.
https://www.berlinlasers.com/pro-red-cross-projecting-laser-alignment
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