A more thorough explanation:

Definition: Field notes are the written records made by a surveyor while working in the field. These notes include measurements, observations, and sketches of the area being surveyed.

Example: A surveyor is hired to measure the boundaries of a piece of land. They bring a field book with them and record the measurements of each corner of the property, as well as any obstacles or features that may affect the boundaries. They also make sketches of the area to help them remember the layout.

Another example: An archaeologist is excavating a site and takes field notes to document the location of artifacts, the depth at which they were found, and any other relevant information. These notes help the archaeologist keep track of their findings and make connections between different parts of the site.

The examples illustrate how field notes are used to record important information while working in the field. They serve as a reference for the surveyor or archaeologist to use when analyzing their data and creating reports.