26X & 40MM LENS - With a 26X magnification lens and a large 40mm aperture, this automatic optical level allows you to acquire a clear and bright image in the range of 40m. Plus, it offers excellent accuracy from 1/16" to 100ft. Self Leveling Compensator with Lock This optical level kit contains a cushioning magnetic compensator to reduce the effects of vibration, while the locking device protects the pendulum from damage during transport. INDUSTRIAL GRADE DESIGN Our build level is designed with industrial grade metal housing. It is IP54 waterproof, dust-free and shockproof. Therefore, the level is very stable and ensures a more accurate measurement. Easy Installation & Alignment The circular bubble vial with a 90 degree prism ensures setup and alignment is easy and fast, 5/8" thread at the bottom can be fixed on a standard tripod. WITH STURDY CASE Our automatic optical level comes with a sturdy carrying case and lead line. It has been widely used for construction engineering investigation, deformation and subsidence tracking, mining investigation, etc.