European investor 3i Group has agreed to sell its 64% stake in Trescal, a calibration services provider, to AXA Private Equity. Minority Trescal investor TCR Capital has also agreed to sell its stake to AXA. The enterprise value of the transaction is about €250 million ($335.1 million). With operations in 16 countries, Trescal provides a broad range of services for the test and measuring equipment market. Proceeds to 3i Group will be about €71 million ($95 million), representing a money multiple of 2.0x on its €36 million ($48.1 million) investment.