Ambrose for use in a clamp mounting device, having two guides (26) each with an entry plate (28) and an exit plate (30) for bending one side-end of a staple clamp, thereby marked, that each of the guides (26) has an optical control system with a signal source (40) and a signal detector (42) by which the passage of a defined section of a side-day in the guide (26) can be determined.
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