Abstract: The invention is a dual head mechanical nailer and method capable of driving a pair of nails, screws, staples, or other forms of attachments into a drywall corner bead at an offset orientation and at an angle where each of the attachment means is ninety degrees from the other. The nailer can be powered by combustible fuel, by pneumatic power, by electric power supplied by a battery, or by electric power supplied by an electrical service connection. A magazine of nails, screws, staples, or other forms of attachments may be attached to each head of the mechanical nailer for supplying the respective head with the respective attachment.

Abstract: An architectural detail (10 or 100) for coupling to a structure (124) to enhance the appearance of the structure. The architectural detail includes a core (18 or 118) and an outer covering (14 or 114) at least partially covering the core. The architectural detail further includes a support member (22 or 122) extending outward from the core. The support member is adapted to support the architectural detail a selected distance above a support surface (112) such that the outer covering disposed on the core of the architectural detail does not touch the support surface.

Abstract: A box assembly device for mounting ceiling fans in cathedral or other ceilings with exposed rafters. The device consists of a formed or molded box, intended to mount between exposed rafters or joists, with mounting facilities for an electrical ceiling fan. The device has provisions for the electrical wiring to be mounted above the device, in the accepted manner, with the fan being located below the decorative box. In addition to decoration, the box serves the purpose of providing a convenient and quick mounting platform.

Abstract: An adjustable T-square comprising an elongated blade with measuring indicia on its top surface and an elongated cross member having angular measurement indicia on its top surface. The blade and cross member are coupled together to provide precise relative perpendicular positioning, relative movement of the cross member along the longitudinal axis of the blade while maintaining the perpendicular relationship, and relative angular adjustment. The perpendicular orientation between the cross member and blade is provided by a notch within the top surface of the cross member which receives the blade. A threaded member and knob are employed for attaching the cross member and blade to permit relative positioning angularly and linearly while coupled, and to secure the blade and cross member in a desired position.