The French arm of Apax Partners is set to agree terms for the acquisition of Schlumberger Systèmes, a manufacturer of ticket machines, for just over €100m ($109m) in what would be its second buy-out so far this year.

Sources close to the deal said Apax and the company had been in discussions for some time and that the company's 950 employees were being informed of the deal this week. Final agreement of terms is expected by mid-September.