Our History
Empowering geoscientists everywhere to explore and quantify the world since 1969. For fifty years, Geometrics has pursued its mission to explore and understand the land, sea, and air using geophysical methods, and it’s accomplished this through constant cutting-edge geophysical research, innovative equipment manufacturing, and world-class customer support. Explore the Earth's surface for minerals, oil & gas, unexploded ordinance, and utilities, or conduct geotechnical engineering studies, archaeological surveys, and more with our innovative line of seismographs, magnetometers, and geoelectric instruments. Geometrics has provided superior equipment and technical expertise to thousands of people around the world in universities, research institutions, government agencies, exploration firms, and geophysical and engineering consultants.
Join us and hundreds of other companies on the cutting edge of geophysics. Geometrics is a proud member of the OYO Corporation worldwide network of companies. As part of the OYO global family, we are a part of their rich history of dedication towards building high-quality instrumentation and providing long-term service to our customers. To learn more about our history and the origins of Geometrics Inc, please read this synopsis by the founder, Sheldon Breiner.
Staff
Bart Hoekstra
President
Ron Royal
VP Operations
Naiema Jackson
Sales Manager
Kevin Hurley
Customer Service Manager
Tommy Rosa
Marine Seismic Product Manager
Matt Guy
European Sales Manager
Randl Rivera
Customer Service Repair Supervisor
Mike Ortega
Customer Service Lease Pool Coordinator
Kolby Pedrie
Land Product Manager
Mark Prouty
Technical Consultant
Jacob Stivers
Geoscience Applications Specialist
Tiffany Bachtel
Geophysical Applications Specialist
Our Network
Exclusive Representatives
Group Companies
Affiliated Professional Organizations
Geometrics Representative Map
Network of trusted Geometrics Representatives. If you're interested in buying our equipment to reside in the country of one of our representatives, please contact us and we'll place you in touch with the representative.Careers
Geometrics Inc is a diverse, dynamic group of Scientists, Engineers, and Geophysicists. Together Geometrics works together to design, manufacture, and sell geophysical equipment solutions for a variety of industries. Our Sales, Engineering, Manufacturing, Support, Accounting, and Marketing departments work together as a team, with an average employee tenure of 12 years. Together we're trying to better understand the world through geophysics. If our mission alligns with your values, please visit our careers page for available job opportunities.
Bart Hoekstra
President
Bart Hoekstra is the Vice President of Business Development at Geometrics and has been employed at Geometrics since 2006. Prior to that Bart had over 20 years’ experience as a consulting geophysicist at a variety of companies including geophysical consulting companies, large engineering companies, and mining consulting firms and has been a lifelong customer of Geometrics products.
Tommy Rosa
Marine Seismic Product Manager
Gretchen Schmauder
Director of Marketing
Dr. Gretchen Schmauder is our Director of Marketing and Promotions. She joined Geometrics in 2014 as the Rental Manager and then the Customer Service Manager and in 2016 took the position as Director of Marketing and Promotions. Gretchen came from a construction engineering background and spent nearly a decade traveling the country to evaluate the structural integrity of deep foundations. She has a bachelor’s of science in Geology from Western Washington University and an MS degree in Geochemistry, a Ph.D. in Geophysics, and an Executive MBA from the University of Nevada, Reno. Her Ph.D research focused primarily on the development of a 3-dimensional seismic hazard model for enclosed basins. She is a licensed geologist in California and Utah.
Mark Prouty
Technical Consultant
Dr. Mark Prouty, retired President, has been with Geometrics since 1994,. Mark received his Masters from University of California at Berkeley in Electrical Engineering. Mark began his career as a Design Engineer at Schlumberger, developing his interest in designing instrumentation to make difficult measurements. He transferred to Silicon Valley in 1986, during the significant oil slowdown of that period. Mark then returned to UC Berkeley for his PhD, concentrating on numerical methods for electromagnetic simulations. He tried management consulting at McKinsey and Company for a year before beginning at Geometrics as Vice President of Engineering in 1994. In 1999, he became President and continued in that role until 2025, when he retired. He still contributes his expertise to Geometrics for special projects. Mark is also an avid golfer.
Mike Ortega
Customer Service Lease Pool Coordinator
Mike Ortega has been with geometrics for 20 years. He began his career with us in the manufacturing department as a mechanical and electrical technician. After a few years, he moved over to the customer service/lease pool department to help in repairs and customer support. Now he leads the rental department, maintaining all geometrics rental equipment, used sales, rental quotes, and customer support. He also maintains equipment through preventative maintenance and inventory control. If you're interested in renting from us, please visit our rentals page for more information.
Naiema Jackson
Geologist – Magnetometer Sales
Naiema Jackson is one of Geometrics’ newest additions to the magnetometer sales department. She began in January of 2014 just months after earning a BA in Geology from Ohio Wesleyan University. She is enthusiastic about her work and enjoys traveling to meet customers and representatives. Throughout her career at Geometrics, Naiema hopes to encompass and preserve what she learned from her first boss, and now retiree, Ross Johnson. The most significant of which is the importance of maintaining positive relationships with customers and representatives, plus a strong passion for magnetics.
Emily Hart
Offshore Product Manager
Emily Hart joined Geometrics in 2022 as our Offshore Marine Manager. Emily has extensive geophysical experience both on- and offshore, including marine streamer and P-cable seismic data collection.
Randl Rivera
Customer Service Repair Supervisor
Randl Rivera is a native Californian living most of his life somewhere along the coast. He has been employed at Geometrics for 13 years this coming May. He is our senior technical support person and also functions as the repair shop supervisor. His electronic/instrumentation training received as a Metrology technician in the USAF has enabled him to grasp the wide variety of geophysical equipment we manufacture. Randl provides field support and functions as the main communications hub between customers and other Geometrics professionals.
Ron Royal
VP Operations
Ron Royal is our VP of Operations.
Stefan Burns
Applications Geophysicist – Seismic
Kevin Hurley
Customer Service Manager
Kevin Hurley has a B.S. Physics from Ithaca College. During his four years at Ithaca he was fortunate to operate dozens of geophysical instruments (including the G-858 and OhmMapper) for work at archaeological sites in Europe and across the United States. He started working for Geometrics in December 2011 as an engineer/magnetometer salesperson and to help the engineering development of several magnetometer projects. His current position of Customer Service Manager focuses towards training and technical customer support, however he still gets to dabble in engineering projects from time to time.
Matt Guy
European Sales Manager
Kolby Pedrie
Land Product Manager
Kolby Pedrie joined Geometrics as the Land Product Manager in 2022. Kolby previously worked for Geometrics as an Application Geophysicist and has additional experience as a Geophysics Project Manager and Consultant for engineering and research companies.
Jacob Stivers
Geoscience Applications Specialist
Jacob graduated from Oklahoma State University, with a Bachelors in Geology, and a Masters in Biosystems & Agricultural Engineering. His research focused on using smart sensor technology to measure soil moisture, for improved crop water use efficiency. Jacob has worked as a Hydrologist for the USGS and more recently as an Account Manager in the industrial water treatment sector. In his spare time, he enjoys playing instruments, recording/producing music, gardening/composting, and spending time with family/friends.
Tiffany Bachtel
Geophysical Applications Specialist
Tiffany Bachtel holds a B.S. in Marine Sciences and an M.S. in Environmental Sciences with a specialization in deep-sea eco-physiology from The Evergreen State College. Having spent over 400 days at sea, Tiffany has contributed to numerous oceanographic research surveys and has held positions at The University of Hawaii, NOAA Fisheries, and in assessing the biological impacts of deep-sea mining. Her extensive expertise in instrumentation includes working with submersible remotely operated vehicles and marine magnetometers. Since joining Geometrics in 2024, Tiffany is eager to explore innovative applications of magnetometry in biogeochemical research. Outside of her professional work, Tiffany appreciates opportunities to travel and uses her experiences to create garments that raise awareness for the communities she visits.