Show us why the public should always call a land surveyor

Where are you surveying?

Follow Nikon Support Hub

This community Hub is for Land Surveyors United members who use Nikon Instruments in the field. This group is for discussions and tutorials related to Nikon user. Land Surveyors United is not directly affiliated with Nikon and all logos and imagery are copyright of their respective owners.

65 Nikon Users
👉️Join this Hub
Land Surveyor

Arc reference line

Hii frnds.. hope all doing well... can anybody guide me about arc reference line in NIKON NPL 362 . At starting we need to fill pt1 then tangent angle... which tangent angle we have to input here. Plz make it clear. ThnxRegardsNayum khanLand surveyor

You need to be a member of Land Surveyors United - Survey Earth to add thoughts!

Join Land Surveyors United - Survey Earth

Votes: 0
Email me when people reply –


  • Nayum khan thanks how we define the Az1 and Az2 I am confused
    • Land Surveyor
      Az1 and az2 are tangent .... but this tangent angle is should be measured by the existing point or north? I m confused. I checked both but i didnt get it.
    • Hi Nayum,

      Both AZ1 and AZ2 are forward Azimuths or bearings,your tangent angle is the same as the Radius or Central is also the same angle at the PI of the Curve which is not shown.. Which is also a Deflection angle of the 2 tangents,it is also known as the Central or Point of Intersection (PI) angle which is also called the Delta Angle. The program is asking for the curve Data to calculate where the offsets are from the arc line or Center Line of curve..So your angle in question is the same angle at the Radius looking at the Point of Curve then turning to the Point of Tangent.Point of Curve is the beginning and Point of Tangent is the end of the Curve. Have you calculated all the parts of the Curve???.
  •  Hi Nayum,

     Do you not have a manual for this TS??? .

    First it is in APPs on Program Keys. On Page 92 it shows a example on how to do this. 

    I do not know if you can download a copy, maybe but you can view it on line. But if you join then maybe.

    This is from SlideShare/ Land Surveyor United.  This is measuring distances and offset values on a arc curve. Is this what you are doing. Let me know if this helps.


    PS. sorry I did not see where Survenator had already show you a manual. Look in it on page 92.

  • Land Surveyor
    I checked these videos... these are for basic setup or settings only. I need about arc reference line. Anyway thnx for responding.
  • Land Surveyor
    THNX ...i will check it. Thnx a lot
  • Survey Legend

    Here are a couple of videos which may help:

    and the manual

This reply was deleted.