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Due to the July 4th Holiday our store will be closed on Thurday July 3rd at 4pm through Friday July 4th. You can always place your orders online and they will be processed as soon as we get back on Monday July 6th. Alternatively you may email your requests and we will get back to them in a timely manner.

We appreciate your patience as we return to our regular operations schedule.



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    Northwest Instrument 10123 20X Transit Level NSL500B *BACKORDER*

    By Northwest Instrument | Mfr#: 10123 | Tiger#: TS9271
    Northwest Instrument
    Authorized Dealer
    Northwest Instrument NSL500B Transit Level 10123
    • Northwest Instrument NSL500B Transit Level 10123
    • Item thumb


    • For leveling, measuring angles and plumb
    • 200 foot range
    • 1/4-inch at 100 feet accuracy
    • 20x magnification
    • ± 45-degree vertical angle
    • 360-degree horizontal circle 
    • Clamps and tangents
    • Eyepiece with fixed cross hairs 
    • IP54 dust and water protection 
    • 5/8 x 11 tripod thread
    List Price: $319.00
    You Save: $109.70 - 34%
    Ships Out Within:
    Backorder (Est. Ship Date 7/31/2020)
    This item is currently on Backorder

    Overview for Northwest Instrument 10123 20X Transit Level NSL500B

    The Northwest Instrument NSL500B Transit Level is for builders and surveyors that require horizontal angle measurements, plumbing vertical columns, measuring property lines, excavating trenches and running pipelines. With 200 feet working range and 20x magnification, the NSL500B features clamps and tangents that bring the instrument quickly on target.

    Precise Vertical and Horizontal Angles

    This transit level can measure vertical angles ±45 degrees and measure horizontal angles to within 1-degree accuracy. The NSL500B can also be used as a level by locking the telescope into place. Its level vial has an accuracy of 1/4-inch at 100 feet, making it ideal for elevation measurements and grading applications.  

    Clear Rod Readings

    For easy level rod readings, the NSL500B’s telescope has exceptionally clear optics and stadia lines allowing you to determine the distance of the transit from the level rod. The Siteline 500B also offers manual leveling using three leveling screws and leveling vial. With a 5/8 x 11 thread, this optical level’s base fits both flat head and dome head tripods.

    Tough and Durable

    With reinforced rubber pads and an IP-54 rating, this transit level’s delicate portions are protected for added durability. It also features rubber lens jacket that guards the lens and provides sun shade to reduce glare.

    This Northwest Instrument transit level package comes with a plumb bob, hard carrying case and 1-year manufacturer’s warranty.