A-A-53324
The cassette carriage shall be reinforced with steel and shall move freely and smoothly in a vertical direction. There shall be a locking device to permit locking the cassette carriage at any point in its vertical travel. The cassette carriage shall be adjustable to hold and lock in place any standard type cassette, with the cassette in either the horizontal or vertical position. The cassette carriage shall be marked to facilitate centering of cassettes. The front of the cassette carriage shall be open so that the cassette is always in view as an aid to centering.
The adjustable cassette adapter shall be designed so that any standard size cassette may be used with a standard 14 by 17 inch grid. The adapter shall be fabricated of aluminum or sheet steel. It shall have a clamping device for holding the cassette, and a lock device, such as a knurled thumbscrew, to lock the cassette in place.
The chinrest shall be shaped to the contour of the chin so as to facilitate positioning of the patient in chest radiography. It shall be permanently fastened to the top edge of the cassette carriage. The chinrest shall be made of cast aluminum or other suitable material, shall be highly polished, and shall have no sharp corners or edges.
The height indicator shall be graduated in inches and shall be constructed so as to become an integral part of the cassette holder. It shall be interchangeable for right or left side mounting, and shall be adjustable. The indicator shall be fabricated of sheet steel or other suitable material.
The holder shall be degreased, primed, and finished with smooth enamel in the manufacturer’s standard color. Trimming shall be chrome or other suitable corrosion-resistant material. The finish shall not fade, crack, blister, or peel under normal conditions of use.
Any welding shall be durable, sound in every detail, free of cracks, porosity, and other defects, and in accordance with the latest practices recommended by the American Welding Society.
The holder shall be free of burrs and sharp edges. It shall be clean and free of oil.
All holder material shall be high grade throughout and of sufficient strength to maintain operational alignment for the life of the equipment.
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