If you do have survey grade differential correction in that work, using backup setup for profiling a drainage line is simply not acceptable if the requirement is for detailed engineering.
I don't know what you are trying to achieve here but using a GIS grade GPS or a GIS grade precision to determine a profile is simply not possible from an engineering standpoint.
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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.
Thoughts
hi
If you do have survey grade differential correction in that work, using backup setup for profiling a drainage line is simply not acceptable if the requirement is for detailed engineering.
I don't know what you are trying to achieve here but using a GIS grade GPS or a GIS grade precision to determine a profile is simply not possible from an engineering standpoint.
From where you take your differential correction?