For a century, the Morehouse Proving Ring has set the global standard for precision in force measurement. First manufactured in 1925, it revolutionized material testing by enabling accurate calibration of devices like Brinell hardness testers, dramatically improving safety and reliability across industries such as shipbuilding, aerospace, and construction. Its robust design, exceptional stability, and accuracy—with uncertainties as low as 0.0125% of full scale—have ensured its continued use, including on the International Space Station. Discover the full story and legacy of the Morehouse pronging ring click here.
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