A Key to the Solar Compass, and Surveyor's Companion: Comprising All the Rules Necessary for Use in the Field. Also, Description of the Linear Surveys, and Public Land System of the United States; Notes on the Barometer, Suggestions for an Outfit for a Survey of Four Months, Etc., Etc
D. Van Nostrand Company, 1881 - 202 Seiten
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adjust Aneroid astronomical barometer celestial object centre chains clamp cloth compass sights convergency correction cosine course declination arc degrees diurnal motion earth east and west ecliptic elsar equator equatorial lines equatorial sights equidistant feet fractional section half heavenly body horizon hour angle hour arc hourly difference Illustrated inches index error instrument lake latitude 42 latitude arc length lines run longitude magnetic compass measurement mercury meridian passage meridional refraction morocco Nautical Almanac north and south number of links pack parallax plane polar axis pole principal meridian public lands purpose quarter section corners radius reckoned revolving limb right angles right ascension river rl.udy rlsar rrr.r rrrrr running lines screws section lines silver plate solar compass star's station strap subdivisions subtracted sun's declination sun's image falls survey telescope Thermometer tion township lines townships true meridian upper plate variation vernier west boundaries Wssr zodiac
Seite 75 - The boundary lines, actually run and marked in the surveys returned by the Surveyor General, or by the surveyor of the land south of the state of Tennessee, respectively, shall be established as the proper boundary lines of the sections, or subdivisions for which they were intended ; and the length of such lines, as returned by either of the surveyors aforesaid, shall be held and considered as the true length thereof.
Seite 75 - First. All the corners marked In the surveys, returned by the surveyor-general, shall be established as the proper corners of sections or subdivisions of sections, which they were Intended to designate; and the corners of half and quarter sections, not marked on the surveys, shall be placed as nearly as possible equidistant from two corners which stand on the same line.
Seite 75 - And the boundary lines which shall not have been actually run and marked as aforesaid shall be ascertained by running straight lines from the established corners to the opposite corresponding corners...
Seite 117 - Mechanical Drawing. A Text-book of Geometrical Drawing for the use of Mechanics and Schools, in w.hich the Definitions and Rules of Geometry are familiarly explained; the Practical Problems are arranged from the most simple to the more complex, and in their description technicalities are avoided as much as possible. With illustrations for drawing Plans, Sections, and Elevations of Railways...
Seite 118 - ALEXANDER (JH). Universal Dictionary of Weights and Measures, Ancient and Modern, reduced to the Standards of the United States of America.
Seite 74 - An Act providing for the sale of the lands of the United States in the Territory Northwest of the Ohio and above the mouth of Kentucky River, and of the Acts amendatory of the same.
Seite 75 - And the boundary lines which have not been actually run and marked shall be ascertained by running straight lines from the established corners to the opposite corresponding corners; but in those portions of the fractional townships where no such opposite...
Seite 75 - ... in those portions of the fractional townships, when no such opposite corresponding corners have been or can be fixed, the said boundary lines shall be ascertained by running from the established corners due north and south or east and west lines, as the case may be, to the watercourse, Indian boundary line, or other external boundary of such fractional township.
Seite 74 - One half of the said townships, taking them alternately, shall be subdivided into sections, containing, as nearly as may be, six hundred and forty acres each, by running through the same, each way, parallel lines, at the end of every two miles ; and by marking a corner, on each of the said lines, at the end of every mile...