In order to make clear enough dot alignment at quite long work distance, it is not easy to rely on the use of a simple red laser pointer or simple sticker etc, it is always making good job after the use of a 100mW 650nm red laser diode module. Being made with an import 650nm red laser diode and qualified glass coated lens, after cooperation with highly durable aircraft used aluminum alloy housing tube, it is just being made into an industrial stabilized dot measuring tool. When compact size

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