Mason Wells buys 106-year-old thermocouple maker Cleveland Electric Laboratories

What's the deal? Milwaukee-based private equity firm Mason WellsDealroom has a profile for this one. Try Dealroom → has acquired The Cleveland Electric Laboratories CompanyDealroom has a profile for this one. Try Dealroom → (CEL), a Twinsburg, Ohio-based manufacturer of thermocouple products. The deal, announced in September 2026, is complete; terms were not disclosed.

What each side does: CEL, founded in 1920, makes thermocouple products used in high-temperature and demanding manufacturing environments. It primarily serves aerospace and defense, power generation, and other industrial markets. Mason Wells is a private equity firm.

The signal: The acquisition adds a century-old industrial specialist to Mason Wells' portfolio, giving the firm a foothold in sensing products for aerospace, defense, and power generation — sectors that rely on precise temperature measurement in extreme conditions.

Read more: biztimes.com

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