Elements of Surveying: With a Description of the Instruments and the Necessary Tables, Including a Table of Natural Sines |
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Page 37
... horizontal lines of each page , are written the degrees whose sines , cosines , & c . are expressed on the page ... PLANE TRIGONOMETRY . 37 Table of Logarithmic Sines,
... horizontal lines of each page , are written the degrees whose sines , cosines , & c . are expressed on the page ... PLANE TRIGONOMETRY . 37 Table of Logarithmic Sines,
Page 51
... plane . All planes parallel to such a plane , are also called horizontal planes . 71. A plane which is perpendicular to a horizontal plane 72. All lines of a horizontal plane , and all is called a vertical plane . Definitions and ...
... plane . All planes parallel to such a plane , are also called horizontal planes . 71. A plane which is perpendicular to a horizontal plane 72. All lines of a horizontal plane , and all is called a vertical plane . Definitions and ...
Page 52
... horizontal plane , and all lines which are parallel to it , are called horizontal lines . 73. Lines which are perpendicular to a horizontal plane , are called vertical lines ; and all lines which are inclined to it , are called oblique ...
... horizontal plane , and all lines which are parallel to it , are called horizontal lines . 73. Lines which are perpendicular to a horizontal plane , are called vertical lines ; and all lines which are inclined to it , are called oblique ...
Page 55
... horizontal , and if the acclivity or declivity of the ground be too great to admit of measuring a whole chain at a ... plane of its base horizontal . This ball , which is hollow , is firmly connected with the smaller base of of the ...
... horizontal , and if the acclivity or declivity of the ground be too great to admit of measuring a whole chain at a ... plane of its base horizontal . This ball , which is hollow , is firmly connected with the smaller base of of the ...
Page 62
... horizontal axis and the line of collimation , these lines may be adjusted at right angles to each other , if they ... plane passed through the line of collimation , with the vernier plate . It is important to ascertain the exact ...
... horizontal axis and the line of collimation , these lines may be adjusted at right angles to each other , if they ... plane passed through the line of collimation , with the vernier plate . It is important to ascertain the exact ...
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Common terms and phrases
adjusted angle of elevation axis azimuth back-sights base line called centre clamp-screw coincide column comp compass Cosine D Cosine Sine Cotang course curve degrees determined difference of level direction divided double meridian distance draw east elongation error example feet field notes figure given angle given line given point ground Gunter's chain hence horizontal angle horizontal distance horizontal plane hypothenuse inches instrument intersection LatDegDegDegDeg Distance latitude and departure length levelling screws line AC line of collimation logarithm M.
M. Sine marked measure method multiplied natural sines needle object paper parallel passing perpendicular plane of reference protractor radius right angles right-angled triangle rods scale of equal secant side sights similar triangles Sine Sine spider's lines square chains staff subtract surface survey Tang tangent theodolite true meridian vernier plate vertical limb yards