Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
From inside the book
Results 1-5 of 50
Page 21
... drawn . 12. Through the same point , only one straight line can be drawn which shall be parallel to a given line . 13. Magnitudes , which being applied to each other , coin- cide throughout their whole extent , are equal . CHAPTER III ...
... drawn . 12. Through the same point , only one straight line can be drawn which shall be parallel to a given line . 13. Magnitudes , which being applied to each other , coin- cide throughout their whole extent , are equal . CHAPTER III ...
Page 23
... draw through a given point a line which shall be parallel to a given line . Let C be the given point , and AB the given line . Place the hypothenuse of the triangle against the edge of the ruler , and then ୯ A B place the ruler and ...
... draw through a given point a line which shall be parallel to a given line . Let C be the given point , and AB the given line . Place the hypothenuse of the triangle against the edge of the ruler , and then ୯ A B place the ruler and ...
Page 24
... Draw af and the other nine parallels as in the figure . Produce ba to the left , and lay off the unit of the scale any convenient number of times , and mark the point 1 , 2 , 3 , & c . Then , divide the line ad into ten equal parts ...
... Draw af and the other nine parallels as in the figure . Produce ba to the left , and lay off the unit of the scale any convenient number of times , and mark the point 1 , 2 , 3 , & c . Then , divide the line ad into ten equal parts ...
Page 26
... drawn , and let the lengths of these chords be accurately laid off on a scale : such a scale is called a scale of chords . In the figure , the chords are drawn for every ten degrees . The scale of chords being once constructed , the ...
... drawn , and let the lengths of these chords be accurately laid off on a scale : such a scale is called a scale of chords . In the figure , the chords are drawn for every ten degrees . The scale of chords being once constructed , the ...
Page 27
... draw a line through the point so marked and the angular point : this line will make with the given line the required angle . SECTORAL SCALE OF EQUAL PARTS . 90 100-110 120 130 140 150 160 170 180 190 Ղ 20 30 40 50 60 70 SO 90 100 110 ...
... draw a line through the point so marked and the angular point : this line will make with the given line the required angle . SECTORAL SCALE OF EQUAL PARTS . 90 100-110 120 130 140 150 160 170 180 190 Ղ 20 30 40 50 60 70 SO 90 100 110 ...
Common terms and phrases
acres 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 decimal 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 half hence horizontal angle horizontal distance horizontal plane hypothenuse inches instrument intersection 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 piece of land pins plane of reference protractor radius right angles right-angled triangle rods scale of equal secant side similar triangles spider's lines square chains staff subtract surface survey Tang tangent theodolite true meridian vernier plate vertical limb yards