Abstract: In a device for holding a rectangular package of frozen foods, a pinch-frame constructed from a pair of Y-shaped members, each member having tow integrally formed arms, the upper arm of the Y-shaped meeting in a right angle. Integrally formed handles extend outwardly from the exterior of each respective right-angled vertex, in approximately the plane of the two arms, to provide the tail of the Y-shaped of each member, Each of the extended arms of each member is flat on one side of the Y-shape thereby defining two contact pads that are held in contact by connection. The handles of each member is stepped outwardly to form fulcrum means that when the handles are squeezed together open the contact faces.

Abstract: An anti-parallax scintillator system images light from a face of a scintillator radiated by penetrating ionizing radiation from a localized source. Radiation from the source will traverse the scintillator along rays forming a cone having its vertex approximately at the source. Scintillator light directed along each such ray is collected and redirected toward an aperture in a screen between the scintillator and the photocathode of an image intensifier. The aperture transmits the redirected light which is then incident upon the photocathode to form an image. Scintillator light not directed along rays from the vertex will miss the aperture and be blocked from the photocathode by the screen. A second embodiment, without an aperture, uses a plurality of mirrors arranged in a quasi-Newtonian configuration to provide anti-parallax imaging.