Strainoptics

Employee Size

2-10

Organization Type

Privately Held

Headquarters

North Wales, PA

Founded

1985

Founded in 1985 by photoelasticity expert Alex Redner, Strainoptics manufactures non-destructive optical stress-measurement instruments for the glass and plastics industries. From its facility outside Minneapolis, the company also trains customers worldwide, provides technical support, and calibrates and repairs polarimetry equipment from any manufacturer. Its GASP® polarimeter, introduced in 1990, is an internationally recognized standard for measuring surface stress in tempered and heat-strengthened glass.

• StresstechFor more than 40 years, Stresstech has developed and manufactured non-destructive testing equipment and measurement services that reveal residual stress, heat-treatment changes and grinding damage in manufactured components. Founded around Barkhausen noise technology, the Finland-headquartered group now supports customers through offices in Germany and the United States, with systems ranging from production-line inspection to laboratory analysis. Its Stresstech Oy operation is ISO 9001:2015 certified, while affiliated laboratories in the United States and Germany hold ISO/IEC 17025 accreditation.334513PITTSBURGH, PA
• Strainsense Enterprises, IncFounded 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.MCKEESPORT, 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
• GrayGlass CompanySince 1946, GrayGlass has fabricated, distributed and imported specialty glass for industrial, architectural, lighting and optical applications. Its Queens Village operation combines a 60,000-square-foot factory with more than 200 years of staff glass expertise, producing precision work from one-off parts through million-piece runs. GrayGlass supplied more than 6,000 high-precision absorbing glass shields for the National Ignition Facility, a project that reflects its particular strength in demanding optical fabrication.QUEENS VILLAGE, NY