Founded in 1973 by former U.S. Steel Research project engineer Ronald S. Vranka, Strainsense Enterprises designs and manufactures custom load cells and force-measurement systems for research, testing, and industrial applications. The McKeesport company pioneered digital load-cell calibration systems and still builds its products in the USA, while also providing ASTM calibration and repair services for equipment from any manufacturer. Son Layne Vranka became president in 1992, and many employees have remained with the company for more than 25 years.
ASTM E-4
certification
ASTM E-74
certification
Load Cell CentralFounded in 1985, Load Cell Central designs and builds load cells, industrial weighing systems, and force-measurement equipment from its Pennsylvania operation. Its work ranges from custom systems and difficult replacement parts to repair and calibration, with particular depth in materials testing and large, custom-built load cells. The company also ships hundreds of pre-calibrated vessel, hopper, and silo batching systems worldwide each year.MILAN, PA
Strainsert CompanyIn business since 1960, Strainsert Company is a West Conshohocken manufacturer known for pioneering its patented internal strain-gage process, which protects sensing elements inside small holes. Its full-cycle, U.S.-based operation brings more than 150 combined years of in-house engineering experience to custom force-measurement work for demanding aerospace and industrial applications, with NIST-traceable calibration performed on site.WEST CONSHOHOCKEN, PA
Morehouse Instrument CompanyFounded in York in 1920 as a machine shop, Morehouse Instrument Company now manufactures force- and torque-measurement equipment and provides accredited calibration services. Its history includes developing the Morehouse Proving Ring with the National Bureau of Standards, while its current work ranges from custom calibration machinery to load-cell repair. Morehouse is a family-owned, veteran-friendly small business whose ISO/IEC 17025 services use primary standards and typically return equipment in seven to 10 business days.YORK, PA
TensitronTensitron has been an American instrument maker since 1935, when physicist Dr. Erwin J. Saxl founded the company’s predecessor to solve industrial tension-control problems. Now part of family-owned KTC Instruments, the Pittsburgh operation preserves that engineering heritage by making precision tension meters for manufacturers and maintenance teams worldwide. Its in-house ISO/IEC 17025:2017-accredited laboratory also calibrates the instruments it builds to NIST-traceable standards.PITTSBURGH, PA