Abstract: The present invention relates to a decorative coverture for a fireplace, and methods of making and using the coverture. Advantageously, the coverture is adjustable to accommodate differently sized or constructed fireplaces. The coverture is designed to reduce or even eliminate unwanted airflow between a room in which a fireplace is located. Further, the coverture is insulated to reduce the heat exchange between the room and the covered fireplace. The coverture comprises two parts: a cover assembly and a bracket assembly that are attached to each other magnetically. When properly installed, the cover assembly and bracket assembly create a tight, insulated seal over an unused fireplace opening.

Abstract: An apparatus and method provides for the input of geometric data representing features of a manufactured part and data representing datums and tolerances for the features. Relationships are established between the data and degrees of freedom are determined for the part features and tolerances. The relationships and degrees of freedom are interpreted to determine if the tolerance plan defined by a designer is complete and well formed. If it is not, the designer may then revise the tolerancing plan to provide for a more consistent and useful tolerancing plan resulting in higher quality, lower cost manufactured parts and assemblies.