How accurate can laser scanning be? The maximum possible accuracy of the laser scanner impression basically depends on the technical characteristics of the laser scanner, the distance from the construction and the type of surfaces being scanned and can reach about 2 millimeters. The accuracy is not affected by whether it is cloudy on the day of the measurement or if there is absolute darkness in a space, because it is based on Laser technology. On the contrary, other recording methods (e.g. photogrammetric), are faster but less accurate and this largely depends on the lighting of the space or environment in which the instrument is located, while they cannot give accurate results when the structures being recorded are at a distance greater than 4-5 meters. The range of an average laser scanner is 80 meters. Note that the photogrammetric methods (e.g. Matterport's system) have a much lower cost because the cost of buying a Matterport machine does not exceed €3000, while a good laser scanner is around €40000, without of course the charge for an impression with a laser scanner being tenfold of an impression by photogrammetric methods.