An apparatus includes a strap that is positional about a drill and maintains a static relationship therewith while a drill bit and chuck rotate. The apparatus includes a plurality of light sources and sensors. The light sources and sensors face forwardly and emit corresponding light arrays aligned parallel to the drill bit and measure a linear distance to a target surface respectively. Each light source defines a reflection that has a unique diameter when the drill is not perpendicular, notifying the user to adapt the drill such that identical diameters are reflected on the work surface. A mechanism communicates an output signal to a display screen so that a visual representation of the drill bit location becomes displayed on a display screen. The drill bit is aligned perpendicular to the work surface when the light sources are equidistantly spaced from the work surface.