Mapry, Inc. (Head office: Tamba City, Hyogo Prefecture; Representative Director: Keiji Yamaguchi) has conducted and released the results of accuracy verification for closure error and reproducibility of its 3D measurement LiDAR scanner, the mapry LA03-1. The verification was carried out on measurement routes of approximately 300 meters, 500 meters, and 1,000 meters. The 300-meter route recorded a closure ratio of 0.01%, while even the long-distance 1,000-meter route achieved an extremely stable closure ratio of 0.08%. These results confirm that, despite being a low-cost LiDAR with a base price of 397,000 yen before tax, the device offers an accuracy level suitable for broad practical use in surveying and civil engineering sites. The mapry LA03-1 is a LiDAR scanner developed to make 3D data acquisition easy in the field. This verification aimed to objectively measure, by distance, the accuracy of the SLAM algorithm alone and the reproducibility achieved when applying loop closure, a software-based optimization process. The tests were conducted outdoors near the company building and in a forest environment. Routes were set to start measurement from an initial position and return to the same point. Fixed objects such as walls and equipment were used as targets, and closure error was measured based on the XYZ differences between point clouds from the first pass and the revisit. The closure ratio was then calculated from those values. Across all measurement distances, applying loop closure confirmed that the point clouds matched with extremely high accuracy. Stable results were also obtained using SLAM alone without correction processing. The measurement results were as follows. On the approximately 300-meter route, with loop closure, closure error was about 0.02 to 0.04 meters and the closure ratio was 0.01% to 0.02%; without loop closure, closure error was about 0.01 to 0.55 meters and the closure ratio was 0.01% to 0.24%. On the approximately 500-meter route, with loo