Founded in 1981, Larson Davis manufactures precision acoustic and vibration-measurement instrumentation, with engineering and manufacturing based in Provo, Utah. Now a division of PCB Piezotronics and part of Amphenol, the company builds measurement systems used from community noise monitoring and building acoustics to worker exposure studies and automotive, aerospace, and industrial testing. Its quality system includes ISO 9001 certification and an ISO 17025-accredited, NIST-traceable in-house calibration service.
ISO 9001:2015
ISO 17025
ANSI-Z-540-1
ISO/IEC 80079-34 & Directive 94/9/EC
Compliance program
A2LA Accreditation
IEC 61672
ANSI S1.4
IEC 61260
ANSI S1.11
IEC 60942
ANSI S1.40
IEC 61252
ISO 8041
ISO8007934
Quality certification
ATEXDIRECTIVE
Quality certification
API MetrologyAPI Metrology grew from founder Dr. Kam Lau’s invention of the laser tracker at NIST in 1983 into a global metrology company with teams on four continents. It develops precision measurement systems and provides expert services that help manufacturers inspect complex work and keep production equipment accurate. Its calibration work is A2LA ISO 17025 certified.ROCKVILLE, MD
Fluke CorporationKnown for precision measurement, Fluke Corporation is a manufacturer based in Everett, Washington, serving technicians who need dependable answers from their instruments. The company’s portfolio now includes the former Prüftechnik and Azima businesses, bringing more than 50 years of vibration data into its condition-monitoring work. Fluke maintains ISO 9001:2015 certification across its North American sites and operates calibration laboratories accredited to ISO/IEC 17025.CLEVELAND, OH
Lehna Technologies LLCLehna Technologies LLC develops proprietary software, integrated systems and testing services that help engineers see, measure and control noise, vibration and manufacturing quality. Its SynPAD acoustic-imaging system visualizes three-dimensional sound sources in real time, while SynNVA gives engineers a practical way to analyze noise and vibration without becoming instrumentation specialists. The company also builds customized in-line quality-control systems and develops LabVIEW applications for industrial testing and data acquisition.ROCKVILLE, MD
Wisco Calibration Services IncFounded in 1970 as Westinghouse Instrument Service Co., Pittsburgh’s Wisco Calibration Services calibrates, tests, and repairs precision instruments while also designing and building custom control panels. Now privately held by the Homewood Group, Wisco has retained the management team and staff from its Westinghouse years and supports industrial, defense, energy, and nuclear applications from environmentally controlled laboratories. Its calibration work is conducted under quality systems aligned with ASME NQA-1 and ISO/IEC 17025:2017.334417PITTSBURGH, PA