They have improved reliability under all environmental conditions. Their sturdy and compact bodies are sealed in a waterproof, dustproof, and moisture-proof (IPX6) manner. Fast configuration, easy viewing, and optimal vibration and impact resistance ensure increased productivity. The B-series level includes a precise and reliable compensator that has been tested on-site, and you can trust its accuracy. The optimized design of the telescope provides an exceptionally bright and clear field of view, reducing operator eye fatigue. The combination of fast collimation and horizontal angle measurement enables quick and easy completion of design and alignment guidance tasks.