Surveying prism pole used in land surveying.
It is a telescopic rod, often made from aluminum or fiberglass, designed to securely hold a reflective prism.
The prism reflects laser signals from a total station or other surveying instruments to accurately measure distances and elevations.
The pole is marked with graduations (like the red and white sections shown) for precise height adjustments.
It features a locking mechanism (like a twist lock) to keep the pole at a specific length during measurements.
A bubble vial is typically built-in to ensure the pole is perfectly vertical for accurate data collection.