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Plumbing down from a height point, plumbing up from a ground point, and inspecting a vertical line on a structure, can be carried out exactly in just one tele- scope face, but only if the telescope describes a pre- cisely-vertical plane when it is tilted. To ascertain that this is so, proceed as follows: 1. Target a high point A, then tilt the telescope downwards and mark the ground point B. 2. Transit the telescope, and repeat the procedure in the second face. Mark the point C. The mid-point between the points B and C is the exact plumbing point. The reason why these two points do not coincide can be a tilting-axis error and/or an inclined vertical axis. For work of this type, make sure that the total station has been levelled up pre- cisely, so that the influence of vertical-axis tilt on steep sights is minimized.
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Survey Photos by Tag or CategoryEarth's Largest Survey Photos Collection
Since 2007, Land Surveyors around the world have shared their best Surveying Photos from the field. Inside this collection you can transport yourself to virtually any location on Earth and see how Land Surveyors work, types of equipment being used and environmental challenges associates with being a land surveyor in that location.
Location Based Chapter Hubs also have photos specific to the locations they represent. You can use our Surveyor Apps for quick sharing of your photos from the field.
Note: Members who have uploaded their photos of surveying to this collection can also move their photos to location based hubs. To see how, follow this tutorial.
Survey Photos by Tag or CategoryEarth's Largest Survey Photos Collection
Since 2007, Land Surveyors around the world have shared their best Surveying Photos from the field. Inside this collection you can transport yourself to virtually any location on Earth and see how Land Surveyors work, types of equipment being used and environmental challenges associates with being a land surveyor in that location.
Location Based Chapter Hubs also have photos specific to the locations they represent. You can use our Surveyor Apps for quick sharing of your photos from the field.
Note: Members who have uploaded their photos of surveying to this collection can also move their photos to location based hubs. To see how, follow this tutorial.
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