| 摘要 |
The viewer includes a main body defining a horizontal opening within which a photographic disc is rotatably supported. A light source below the horizontal opening projects the viewed image onto a magnifier lens located above the opening. A viewing port renders the image identifying number on the disc visible. A switch control automatically closes a switch upon grasping of the handgrip portion of the main body. The control is inherently biased to a switch opening position.
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