How accurate are laser distance measurers?

How accurate are laser distance measurers?

Laser rangefinder is mainly used in underground coal mine to measure length, width, height, area and volume, and it is difficult to measure indirectly through Pythagorean law. Mine laser rangefinder is an instrument that uses laser to accurately measure the distance of the target. When the laser rangefinder works, it emits a very thin laser beam to the target, and the photoelectric element receives the laser beam reflected by the target. The timer measures the time from the launch to the reception of the laser beam, and calculates the distance from the observer to the target. Laser rangefinder is light in weight, small in volume, simple in operation, fast and accurate. It is mainly used for underground roadway measurement, topographic measurement, mine construction measurement and engineering construction measurement: measurement accuracy: ± 2.0mm (typical accuracy, standard deviation).

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