This beautiful mahogany-backed F-style mandolin came in for a full fret level, crown and polish to correct a slight rise over the fingerboard extension.  The bridge has a slick wedge and set screw adjustment in each wing.  These set screws allow you to vary the height of the inset acoustic guitar-style saddle with a 1/16" Allen wrench.  The wedges allow for more contact area (ie string transfer to the top) versus the traditional post and thumb wheel bridge.