Pittsburgh-based Ohm-Labs is the only U.S. company focused exclusively on resistance, manufacturing metrology-grade standards, precision current shunts and high-voltage dividers. Founded by Jay Klevens in 1985 and spun off as Ohm-Labs in 2006, the company also carries forward legacy Leeds & Northrup, Julie Research Labs and EIS designs and support. Its products are made in the USA and supplied with A2LA-accredited ISO/IEC 17025 calibration, which Ohm-Labs also provides for equipment from other manufacturers.
A2LA Accreditation to ISO/IEC 17025
ANSI/NCSL Z540.1-1994 Calibration Compliance
Compliance program
NUPIC Approved Calibration Vendor
Registration
ISO17025
Quality certification
IET Labs, IncFounded in 1976, IET Labs manufactures precision electrical test and measurement equipment, with a particular focus on metrology standards and meters for resistance, capacitance and inductance. The U.S. manufacturer also preserves the GenRad and esi instrument lines acquired in 2000 and 2006, while providing calibration and repair through its ISO-17025-accredited laboratory. IET says 98% of its products are manufactured in the United States.ROSLYN HEIGHTS, NY
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
United Instruments, IncSince its founding in 1997, United Instruments has built its identity around in-house engineering and calibration work for utility and industrial customers. Owner Mark Grigoraki brought the company the rights to manufacture the Precision Low Pressure Calibration System in 1998, and United Instruments still performs its manufacturing and calibration work in the USA for metrology labs and major corporations.WESTBURY, NY
Peak MetrologyPeak Metrology is a Pittsburgh-based Aerotech company known for taking on difficult precision-measurement problems with custom-built equipment. Its vertically integrated operation includes 220,000 square feet of production capacity and a development lab where applications can be tested before purchase, serving manufacturers that need more reliable automated measurement.PITTSBURGH, PA