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Which Coordinate setting for UK - Trimble TSC3

Posted by Ian harvey on June 13, 2017 at 5:52pm in Professional Advice for New Surveyors

Hi I'm a student learning Civil 3D and Surveying, I am in the UK.

I have a query.

I have performed a basic RTK-VRS survey of a property for training and downloaded a OS MasterMap and overlayed it  in Civil 3D. The GPRS measurements do not line up with the boundries indicated on the OS MasterMap.

However the measurements on the CAD drawing match the GPRS measurement on the ground.

I'd like to confirm that I'm using the correct Coordinate settings in the TSC3 I have. I've taken some screen shots of the setting and would appreciate if you can confirm these are correct or not. This will allow me to discount this area as being at fault.

I've added a screen shot of the overlay problem I have as well

I'd really appreciate some help, thanks

Ian

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Replies

  • Land Surveyor
    Paul Williams June 14, 2017 at 6:29pm
    Hi Ian, never rely on the os mapping... It's great for general use but in places it can be a couple of meters out.
    It's partly responsible for all the boundary surveys that we get involved with!
  • Seeking Employment
    Sibgatullah ahamd najar June 14, 2017 at 3:59pm
    Check whether coordinate system is wgs84.
    And also use trimble business centre
    • Land Surveyor
      Ian harvey > Sibgatullah ahamd najar June 15, 2017 at 1:34am

      Hi , Yes I am using wgs84 but I'm training on Civil 3D.

      Thanks

  • Land Surveyor
    Jon June 14, 2017 at 1:46pm

    It could be that the master map is wrong. Almost looks to close to be your settings.

    • Land Surveyor
      Ian harvey > Jon June 15, 2017 at 1:36am

      Cheers Jon, I am coming to that conclusion now. But didn't have any previous experience of the mapping.

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