Aâ€”Producing large-size images from TV screens of nominal dimensions, this glare-less, flat and extremely thin lightweight screen utilizes the Fresnel principle of magnification. Advantages are claimed to include good optical quality and freedom from edge distortion. The magnifying element of the screen is a thin sheet of Plexi-glas into which hundreds of tiny circular grooves are pressed. It includes a glare filter and enlarges the image from a 10-in. TV tube up to the size received on a 16-in. tube.
Typewriter Keyboard On Typesetting Machine Typists can now set type on Linotype and Intertype composing machines through the development of a keyboard that has the standard keys of a typewriter. Forty-four keys, electrically operated, fit over the 90 keys of a standard composing machine. The keyboard can be moved from one composing machine to another […]
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Yes, and I’m very blind, but I can see everything. I’M VERY DEAF BUT I HEAR Everything with My New Zenith “MINIATURE” HEARING AID Don’t let deafness kill the joys of living. Let a Zenith home trial prove you, too, can even hear a whisper. Here’s Zenith’s amazing guaranteeâ€”if any $200.00 hearing aid outperforms Zenith’s […]
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