Larson Systems Inc
Industrial Machinery ManufacturingMinnesota, United States11-50 Employees
Larson Systems Inc. is an engineering-driven manufacturer of spring testing equipment based in Ham Lake, Minnesota, with roots dating back to 1979. The company offers a broad lineup of spring testing products—more than 50 options—spanning a range of performance levels and price points. It holds two U.S. patents for its Torsion Spring Tester line and pursues other innovative designs that address specialized testing challenges, from custom tooling for awkward parts to automated testing solutions. Under the Stone Mountain Pet Products brand, Larson Systems designs and manufactures equipment for the pet-care industry, including kennel systems, dog doors, and agility equipment, produced with durable materials. In April 2026, the company announced the departure of its executive vice president Marmande, marking a notable leadership change.