loupe n. Any of a variety of small magnifying glasses, having a magnifying power from 2X to 20X, commonly of 10X, which may be held in the hand, or in some cases held within the eyesocket without the use of a hand. It is commonly used by jewelers and watchmakers.
... trail I followed it for two days, although it was difficult trailing because the redskins had taken every possible precaution to conceal their tracks. On the second day Captain Meinhold went into camp on the South Fork of the Loupe, at a point where the trail was badly scattered. Six men were detailed to accompany me on a scout in search of the camp of fugitives. We had gone but a short distance when we discovered Indians camped, not more than a mile away, with horses grazing near ... — The Great Salt Lake Trail • Colonel Henry Inman
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