US Patent 9233464 Selectively calibrated work piece cutting guide

In one embodiment, an apparatus guides movement of a cutting instrument across a first surface of a work piece. The apparatus has a base, a tape-measure mount, and a fence. The base has a substantially-flat lower surface that abuts the first surface of the work piece. The tape-measure mount mounts a tape measure to the base on a first side of the apparatus. The fence is attached to the base, opposite the first side of the apparatus, and has a guiding surface that guides the movement of the cutting instrument across the first surface of the work piece. At least one movable component, other than a tape measure tape, is attached to the base to permit adjustment of a dimension of the apparatus that is used to calibrate the apparatus for use with the cutting instrument.