If users are looking of an easy operating dot measuring tool, either close or long distance, it is operating easy and quick with a highly bright device of 635nm red laser diode module within 5mW to 100mW. Being made with good thermal emitting inside different dimension metal housing tube, it enables easy installation and highly stable red dot projection in continuous use.
This 635nm red dot laser applies a qualified glass coated lens and glass window inside different dimension metal housing tube. Being made with electric wires for both DC power supply and laser tube tail parts, within the maximum installed distance of 3 meters, it makes sure of easy reaching and long lasting red dot projection. Only if it makes correct use of output power, it assures no mistake measurement for drilling system, laser marking, laser engraving, military targeting, lab experiment work and high tech etc.
https://www.berlinlasers.com/635nm-red-laser-diode-module