{"newspaper_name": "Washington telegraph.", "edition": "01", "page": "p1", "byline": ""}
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MARINERS TINE CoNPAss-The Gin
cinnati Enquirer states that Ralph Reeder,
Esq, Of that City, has taken out patent
tor newly invented instrument of the
above name.


Its useful qualities are thus enumerated:
Ii corrects the variation OF compass, which
of itself alone entities il 10 the admiration
Of scientific men. but more especially to the
confidence Of the mariner.


twill, BY means Of gnoman and uni.
versal dial, give the true meridiaL time in
a moment, and when properly adjusted 20
the suns declinai;on, give the latitude at the
same moment that the longitude is given;
thus saving the mariner the long, tedious,
and oitentimes incorrect calculations which
are now considered necessary to ascertain
the ships course and position. Prof. Locke,
In letter on the subject, says this instru-
ment will not only give the correct latitude
and Longitude at any time and p'ace, and
correct the variation Of the compass, but
will solve all the problems in plane and
spherical trigonometry; thus we have COM
bined in the same invention an instrument
equally useful on sea and on land.