The Northwest Instrument NPA63 Adjustable Prism Assembly is used by engineers and contractors as a target for measuring distances in surveying and construction. Built for durable and stable pole mounting, it features a 5/8 x 11-inch base thread making it compatible with most prism poles, mounts, and tripods.
The NWI NPA63 prism assembly is equipped with a single prism holder with a tilt and a 0/-30 mm offset. A suspended-type single prism target is integrated into a red 64mm canister that holds the entire system. The prism, holder, and target plate assembly are all adjustable to suit the surveyor’s needs.