Patent attributes
An adjustable carpentry trim gage includes a scribing block adjustably attached to a guide block. The guide block includes a guide surface, adapted to be placed against a jamb. The scribing block includes a scribing surface along which a scribing instrument, such as a pencil or an awl, can be drawn to mark guidelines on the jamb, to facilitate installation of a casing on the jamb. The position of the guide block with respect to the scribing block is adjustable to allow the position of the scribing surface on the scribing block, with respect to the guide surface on the guide block, to be set in such a manner that the scribing surface will be placed to indicate a desired reveal on the jamb, when the guide surface is bearing against the jamb. The scribing surface extends beyond the maximum reveal setting of the gage, in a direction parallel to the face of the jamb against which the guide surface is bearing, to facilitate making intersecting guidelines indicating corners of the casing.
