How do you use a saggeypo instrument?

A saggeypo, or saggy pole, is typically used in traditional surveying to determine land elevation and slopes. To use it, position the pole vertically on the ground at the point of interest, ensuring it's stable. Then, align a level or sighting instrument with the top of the pole to measure the height difference between various points. This helps in creating accurate topographical maps or assessing land for construction purposes.