A Pocket Electroscope
نویسنده
چکیده
1. It is inexpensive. 2. It is portable and can be carried in the pocket. 3. All the parts are easily detachable and replaced. 4. It is aseptic. 5. The spatulate form can also be used as a tongue depressor and as a simple throat illuminator at the bed side or where illumination by day light is inadequate. 6. It can be used as a trans-illuminator of the accessory sinuses of the nose in a perfectly dark room.
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