Electric drill attachments for correct hole alignment - has spirit levels for vertical and horizontal positioning and set square to maintain orientation w.r.t. work surface

摘要

Attachments are fitted to an electric drill to ensure that holes are drilled at a correct angle to the surface to be drilled. At the rear of the drill is mounted a spirit level to give the horizontal alignment. Immediately behind is a circular spirit level for vertical alignment. On the front of the drill is mounted a telescopic set square to give right angles. A cursor marked in degrees can be used to give intermediate angles.