This item is a Topcon AT-B series automatic level, a surveying instrument used for measuring height differences in construction and engineering projects.
Model: The box indicates it is an AT-B3 or AT-B4 model.
Features: It includes rapid, accurate, and stable automatic compensation.
Performance: Features a short 20cm (7.9 in.) minimum focus distance, making it useful in confined spaces.
Durability: The series is designed with IPX6 weather resistance for rugged job sites.