A bracket device for securing a mezzanine board assembly includes a brace including a rigid bar and a plurality of connector portions connected to the bar. A brake is associated with the knife-supporting piece whereby upon failure of said shear device, the knife-supporting piece is stopped from rotating within one revolution. The disclosed method may include providing an improved mold hanger substantially contained within the respective existing outer envelope and including low-profile drive mechanisms configured opposably to drive moveable inserts into the mold. In this manner the diaphragm acts as a step-down transformer where a portion of the force or pressure applied to the diaphragm is transmitted to the pressure sensor.