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AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment

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    Buy cheap AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment from wholesalers
     
    Buy cheap AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment from wholesalers
    • Buy cheap AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment from wholesalers
    • Buy cheap AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment from wholesalers
    • Buy cheap AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment from wholesalers
    • Buy cheap AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment from wholesalers

    AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment

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    Brand Name : Leosurvey
    Model Number : AJ12-A4
    Certification : ISO
    Price : 18USD~25USD
    Payment Terms : T/T
    Supply Ability : 500pcs per month
    Delivery Time : 3-5 work day
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    AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment

    AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment


    Model: AJ12-A1


    Overview:

    Leica type Tribrach Replacement of Original GDF121


    Specifications:

    ColorCircular BubbleTorsional StiffnessLeveling Screws
    Pale green8-minute<3"Large-Diameter

    Features:

    A. Replacement of Leica GDF121 Tribrach

    B. High quality features 3X magnification and a twist focus.

    C. With locking forced-centering knob.

    D. 5/8*11 base

    E.8-minute circular bubble

    F. Large-diameter leveling screws


    Tribrach

    A tribrach is an attachment plate used to attach a surveying instrument, for example a theodolite, total station, GNSS antenna or target to a tripod. A tribrach allows the survey instrument to be repeatedly placed in the same position over a surveying marker point with sub-millimetre precision, by loosening and re-tightening a lock to adjust the instrument base in a horizontal plane.


    What is the accuracy of a tribrach?

    The accuracy with which a tribrach returns to its starting position once the instrument has stopped, is called torsional rigidity or hysteresis. This hysteresis is the relative movement between the top plate and the base plate of a tribrach that occurs through the rotation of a TPS instrument.


    Why does a tribrach need to be adjusted?

    The precise alignment of the support area to the base plate of the instrument assures extremely accurate forced centring. The optical plummet is so robust that the need for adjustment during the entire lifetime of the tribrach is practically unnecessary.


    How big are the foot Screw on a tribrach?

    The hysteresis of the tribrachs amounts to a maximum of 3" (1.0 mgon). The foot screws are maintenance-free and have a larger diameter.


    Detailed Pictures for Reference


    Quality AJ12-A4 Tribrach without Optical Plummet Leica Type Green For Survey Equipment for sale
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