The NWI Aluminum Prism Pole with Compression Lock 90100 has alternating bands of red and white and graduations in tenths. This surveying pole comes in a choice of 3 lengths: 8.25' (2.5 m), 11.75' (3.6 m), or 16.5' (5 m). The model NPP01 extends to 8.25' (2.5 m) and collapses to 4.6'. It has 2 sections with a compression lock lever to hold the prism pole at your desired length. This aluminum pole has a 5/8 x 11 thread on the top and a sharp tip on the bottom. You can check for plumb with a built-in bubble level vial. A carrying bag is included.