Instruments, field procedures and the data that comes off them: levels, total stations, differential levelling, traverse field work, notes and data reduction.
What this subject area expects
Reduce differential and trigonometric levelling notes
Read and keep field notes that another surveyor can follow
Choose an appropriate procedure for a required accuracy
Topics covered here
Differential levelling · Field notes and page check · Trigonometric levelling · Profile and cross-section levelling · Two-peg test and collimation · Instrument adjustment and errors · Total station operation · Angle observation · Stadia and tacheometry · Data reduction workflow · Accuracy and procedure choice · GNSS and conventional workflow
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