A device intended to improve the precision in order to work achievable with portable drills, by displaying the axis of the work to be carried out on.

摘要

The device has a bracket plate (4) equipped with a contactor (6) and a luminous indicator (9) and presenting an axis adjusted identical to an axis of a hand-held drilling machine. The plate has a bracket face (F) perfectly placed against a reference face of a piece to be machined by pushing a spring (22) for triggering the contactor and switching on the indicator such that the indicator indicates correct positioning of the drilling machine.