Born in 1978 from a rowing coach’s request, Nielsen-Kellerman designs and builds rugged measurement instruments and performance electronics for outdoor and technical work. The Boothwyn manufacturer remains committed to U.S. production, assembling, testing, and calibrating products such as its Kestrel weather meters and NK rowing systems for customers ranging from wildland firefighters to Olympic athletes. Its 25,000-square-foot Pennsylvania facility is also home to brands expanded through acquisitions, including RainWise and MagnetoSpeed.
RoHS 3 Compliance
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REACH Compliance
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WEEE Compliance
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California Proposition 65
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Conflict Minerals Compliance
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NDAA Section 889 Telecommunications Equipment Declaration
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Slavery and Human Trafficking Compliance
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Anti-Corruption Compliance
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Export Regulation Compliance
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NIST-Traceable Calibration
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Buy American Act Compliance
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RainWiseSince 1974, RainWise has built its identity around American-made weather instrumentation and the inventive work of founder John Baer. The privately owned Pennsylvania company became known for its tipping-bucket rain gauge design and first digital weather station, and today operates from Nielsen-Kellerman’s production facility in Boothwyn. Its equipment turns local weather conditions into usable data for professional and industrial users.BOOTHWYN, PA
Thermal Instrument CompanyBorn in 1959 in founder Fred Curran’s basement, Thermal Instrument Company designs, manufactures, and calibrates thermal mass flow meters and flow switches for measuring liquids and gases. Still a family- and veteran-run business in Trevose, Pennsylvania, the company makes its instruments in the USA and supports them with local calibration and field service. Its meters are used in demanding settings from renewable natural gas and petrochemical plants to semiconductor fabrication, with more than 20,000 devices installed worldwide.334513FEASTERVILLE TREVOSE, PA
Kessler Thermometer and Chase InstrumentFamily-owned and operated since 1934, Kessler Thermometer and Chase Instrument manufactures precision thermometers and hydrometers in West Babylon, New York. The company is one of the last U.S. manufacturers in this field and developed its mercury-free SafetyBLUE line for applications where mercury is prohibited. Its 8,000-square-foot facility includes an ISO-accredited calibration laboratory that certifies instruments and provides NIST-traceable reports.WEST BABYLON, NY
U.S. Tape CompanySince surveyor Justus Roe founded it in 1876, U.S. Tape Company has built its identity around American-made measuring-tool manufacturing. Still producing tape measures in the United States, the company operates facilities in Pennsylvania and California and employs more than 150 people, serving the hardware trade with products such as its long-standing Spencer logger’s tapes.PENNSBURG, PA