The Clinton Instrument Company was founded in 1952 by Henry H. Clinton, inventor of the patented 3kHz High-Frequency Sine Wave design that would radically modernize test methods for wire and cable insulation.

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We are an engineering and manufacturing firm specializing in high-voltage quality control equipment primarily used in the wire and cable and plastic product industries. A pioneer in pinhole detection technology, The Clinton Instrument Company remains at the forefront of research and development in this specialized area. Nearly 70 years of experience have yielded numerous patented designs for the specific pinhole detection requirements of a diverse world market.

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We help customers develop tests quickly and cost-effectively, where other vendors cannot. Given our experience, we have likely tested the product before, or something very similar, so we aren’t learning on the job. Our size also allows us to customize and configure systems to address the changing needs of an active market.

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Located in the scenic, shoreline town of Clinton, Connecticut, we carry over small-town ideals into our work. Our dedicated and experienced staff make us nimble enough to provide incredible customer service, and our breadth of knowledge in high-voltage pinhole detection is unsurpassed. With nearly 70 years of expertise and a library of engineering solutions, we understand the requirements of high-voltage testing and can handle the most challenging applications. Our products are proudly designed and manufactured in our Clinton, Connecticut, USA location.