Comprehensive Whirling Marker – Includes a clear marker that revolves round turn, facilitating comprehensive measurements and precise positioning Flexible Application – Shade tree various applications including construction engineering, deformation observing, and excavation surveys, providing consistent execution in multiple domains Precise Leveling Control – Armed with a horizontal handle and round stage, allowing for interminable adjustments and accurate corner measurements Transportable and Permanent Plan – Arrives with a thin ABS and metal body, making it simple transport and store while ensuring durability High Magnification Clearness – Features a 38mm diameter lens with 32X magnification, providing full resolution pictures for precise observation even in shadowy conditions, Manufacturer: ERRORY