Abstract: In a preferred embodiment, an extendable tape measure made of polypropylene plastic has upper and lower elongated tapes having elongated sides integrally permanently connected by upright integral permanent flanges forming a squared tube of which the upper surface of the upper tape has length-indicating indicia arranged along the longitudinal axis thereof. The flanges are uprightly rigid lending support against downward bending of extended portions of the tape measure but sufficiently resilient as to be bendable at squared corners of junction with the upper and lower tapes when subjected to reforming pressure by a retraction first port in a forward face of a retraction-storage casing, to flatten the squared tubular shape to a flattened windable state during retraction. An upper inner end of one flange is enalrged and forms a first slot between that upper inner end relative to and in juxtaposition to the upper elongated tape.

Abstract: In a preferred embodiment, a speaker system within a closed wooden cabinet in which the speaker is suspended in closed cell foam within a cabinet speaker circular-port, devoid of rigid attachment of the foam and of the speaker to the cabinet, the closed-cell foam being mounted in an open-ended slot between flanges mounted on the speaker cabinet, and the speaker magnet being supported by a resilient gasket mounted on the cabinet by a gasket-support structure, and a rear port being closed by an inner non-porous membrane and an outer porous fabric membrane having foam therebetween, mounted within a membrane-support frame that is suspended within open cell foam suspended within the rear port devoid of rigid attachment to the cabinet, supported between inner and outer flanges mounted on the cabinet, the cabinet being devoid of open ports.