Trescal SA is buying SE Laboratories Inc. for an undisclosed amount.

SE Laboratories, headquartered in Santa Clara, Calif., provides metrology, or scientific measurement, services.

The deal allows Rungis, France-based Trescal, which specializes in calibrating and measuring services for the metrology industry, to continue expanding in the U.S. market. The company first expanded to the U.S. in 2011 with a purchase of Dynamic Technology Inc., a Detroit company that provides metrology services, mainly to the automotive industry.

Trescal is backed by private equity firm Ardian, the new name of AXA Private Equity’s business. Ardian invested in the company in April. The firm announced that it closed a €2.8 billion (U.S. $3.25 billion) fund in October. 

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