Berntsen International, Inc., Madison, WI, has been "Marking the Infrastructure of the World" since 1972 as the leading manufacturer of customized marking products for land surveying. We're proud to say our monuments are made in the USA and are found in all 50 states and over 100 countries.Since 1972, Berntsen has earned a reputation for manufacturing innovation with our exclusive orbital forging technology that revolutionized our processes for making markers and monuments. Berntsen offers over 100 different markers and a wide variety of survey supplies. Whether your work is cadastral, geodetic, hydrographic, topographic, construction, cemetery, right-of-way, pipeline, tunnels, dams, high-precision 3-D GPS, or DIS/LIS, Berntsen products give surveyors confidence that their hard work will last for generations. Innovation has marked Berntsen's history and continues with the recent launching of the new Berntsen Inframarker RFID (Radio Frequency Identification) system for location, verification and documentation of underground assets. Berntsen is "Marking the Infrastructure of the World" by serving and supporting the profession of surveying through personal customer service, quality manufacturing and development of innovative systems.