By Colin Kellaher 



  Perceptron Inc. on Monday said it agreed to be acquired by Swedish industrial tool maker Atlas Copco AB for $7 a share, or about $68.9 million, in cash. 


  The deal represents a roughly 71% premium to Friday's closing price of $4.09 for the Plymouth, Mich., provider of 3D automated metrology solutions. 


  Perceptron said Harbert Discovery Fund L.P., its largest shareholder with a 10.5% stake, has agreed to support the deal, which it expected to close by the end of the year. 


  Trading in shares of Perceptron was halted premarket on Monday. 


  Write to Colin Kellaher at colin.kellaher@wsj.com