The Northwest Instrument NSL100B Builder’s Siteline Level combines simplicity, durability, and reliable performance for a range of leveling tasks. With its 20x magnification and 200-foot working range, it delivers precise sighting with ±1/4-inch accuracy at 100 feet—ideal for projects like setting foundations, grading patios, running straight lines, or turning angles.
Its 360° horizontal circle with vernier scale allows accurate measurement of horizontal angles, while fixed cross hairs ensure consistent, easy-to-read measurements. The multi-layer coated optics enhance clarity, and the rubber lens jacket not only protects the lens but also serves as a sunshade to reduce glare in bright conditions.
Manual leveling is made simple with three smooth-turn leveling screws and a built-in leveling vial. The 5/8 x 11 threaded base fits both flat and dome head tripods, offering setup flexibility on any site. Built to withstand everyday field use, the NSL100B carries an IP54 rating for resistance against dust and water splashes, ensuring dependable operation in varying jobsite conditions.
