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Berntsen International, Inc – Marking the Infrastructure of the World


Berntsen has been the leading manufacturer of customized marking products for land surveyors since 1972.       


NSPS members can always count on Berntsen to deliver the best quality marking products.    Our exclusive orbital forging manufacturing process produces the highest quality survey monuments in the world and our award winning website and personalized customer service make the buying experience the best in the business. 


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.


Berntsen is proud to be the longest private sustaining member of NSPS and an ongoing supporter of NSPS conferences, scholarships, and activities.     



Schonstedt Instrument Company

Ironically, our company first made its mark above ground—way above ground in fact. Our founder, Erick O. Schonstedt, designed his first instruments for use in the aerospace industry, outfitting over 400 satellites with magnetometers, along with the Hubble telescope.

It was not until Schonstedt’s “flagship” product, the GA-52 Magnetic Locator, became the instrument of choice for surveyors in the 1970’s that the company found its true path. Today we stand apart as manufacturer and distributor of the world’s most rugged and dependable underground locators, and the sky’s the limit!

Although today we are almost exclusively focused on the commercial and industrial marketplace, our instruments are still suitable for launching into space, where repair is difficult or impossible. Our patented Heliflux® magnetic sensor technology is unsurpassed for its environmental stability and ability to detect ferrous objects to extreme depths.

In 1998 the company moved to its custom-built headquarters location in the Eastern Panhandle of West Virginia, about an hour’s drive from Washington and Baltimore. Here we assemble and quality control our instruments, provide repair services, design and develop new products and manage communications with our customers, dealers, and representatives. And we are immensely proud to now be a 100% employee-owned company!

SubSurface Instruments

An innovating force that engineers, manufactures and distributes high-frequency and magnetic locators, pipe and cable locators, leak detectors, leak correlators, bore hole gradiometers and specialty locators.

SSI's most recent innovation, the AML or All Materials Locator, locates buried PVC pipes, PE Pipes, plastic or nearly any other subsurface object more efficiently than ever before. Using patent-protected technology developed by SSI, the AML detects buried PVC pipes and other objects that magnetic locators can't find.

SSI features a vast line of professional underground and underwater locator products for every need including surveying, construction, ordnance removal, excavation and exploration. Our customers from the petroleum, water, sewer, power, telecom, cable and gas industries rely on SSI's reliability and dependability to make crucial measurements in the world's most challenging conditions. SSI's products are proudly made in the U.S.A. and offer an industry-leading warranty


SURV-KAP has been honored for the last 44 years to serve the community of fine surveyors throughout the United States, Canada and other countries of the world. All these years SURV-KAP has taken pride in making survey monuments, markers, caps and accessories here in the United States. The SURV-KAP pledge has always been that you receive the finest products in the shortest period of time with reliable and courteous service. The SURV-KAP team of customer specialists and machine operators are the finest in the world waiting to serve you with the highest quality control standards and competitive pricing. SURV-KAP’s products meet or exceed industry standards in material and configuration requirements. Online ordering and same-day UPS shipping is available on most orders. American Express, MasterCard, Visa and Discovery accepted. SURV-KAP’s products are 100% guaranteed!    

Victor O. Schinnerer & Company, Inc.


Schinnerer is one of the largest and most experienced underwriting managers of specialty insurance programs i the world.  At Schinnerer, underwriting management has been a distinct discipline for over five decades.


Our expertise lies in evaluation and underwriting risks, developing and executing risk management activities, and servicing accounts on behalf of our insurance carrier partners.  We carefully select leading insurance carriers to partner with in our chosen markets and , in most cases, we act as the exclusive managing general underwriter.  We then distribute our solutions through a large distribution network of licensed insurance agents and brokers.


Schinnerer's mission is to consistently create superior products and to provide outstanding service and exceptional value to each and every customer.  Our vision is to be recognized as an elite specialty insurance provider/distributor and grow through valued service, innovation and expertise.


Schinnerer, along with Canadian underwriting manager, ENCON form The Schinnerer Group.  The Schinnerer Group handles nearly $670 million in premium on behalf of numerous insurance carriers; through a large network of over 9,6000 active brokers.




About Berntsen International, Inc.

Berntsen International, Inc., Madison, WI, has been “Marking the Infrastructure of the World” for over 40 years 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.

NSPS strives to establish and further common interests, objectives, and political effort that would help bind the surveying profession into a unified body in the United States.

Governance: The National Society of Professional Surveyors Inc. is governed by a Board of Directors. The NSPS Board of Directors meets twice per year.   NSPS has working agreements with state surveying organizations which are represented on the NSPS Board of Directors, and with the NSPS Foundation, Inc. 

Contact Us

5119 Pegasus Court
Suite Q
Frederick, MD 21704
Phone: 240-439-4615
Fax: 240-439-4952

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