marker post; signpost; guide pole
A physical post or pole used to mark a location, provide directions, or indicate a boundary. Common in outdoor settings such as trails, roads, and construction sites.
Marker posts are set up along the mountain trail so you won't get lost.
They put up guide poles around the construction site to mark the off-limits area.
levelling pole; surveying rod
A graduated pole used in surveying to measure differences in elevation. Technical term used in civil engineering and land surveying.
The surveyor used a levelling pole to measure the ground height.