Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
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Page 9
... opposite them , and on the same horizontal line . To find , from the table , the logarithm of any number . 7. If the number is less than 100 , look on the first page of the table , along the column of numbers under N , until the number ...
... opposite them , and on the same horizontal line . To find , from the table , the logarithm of any number . 7. If the number is less than 100 , look on the first page of the table , along the column of numbers under N , until the number ...
Page 10
C. Davies. the four figures found are opposite a line of only four figures , you are then to ascend the column till you come to the line of six figures ; the two figures , at the left hand , are to be prefixed , and then the decimal part ...
C. Davies. the four figures found are opposite a line of only four figures , you are then to ascend the column till you come to the line of six figures ; the two figures , at the left hand , are to be prefixed , and then the decimal part ...
Page 19
... opposite the right angle is called the hypothenuse . Thus , in the triangle ABC , right - angled at A , B. C 17. Among the quadrilaterals , we distinguish : The square the side BC is the hypothenuse . DEFINITIONS . 19.
... opposite the right angle is called the hypothenuse . Thus , in the triangle ABC , right - angled at A , B. C 17. Among the quadrilaterals , we distinguish : The square the side BC is the hypothenuse . DEFINITIONS . 19.
Page 20
... opposite sides parallel . The rhombus , or lozenge , which has its sides equal , without having its angles right angles . And lastly , the trapezoid , only two of whose sides are parallel . 18. A diagonal is a line which joins the ...
... opposite sides parallel . The rhombus , or lozenge , which has its sides equal , without having its angles right angles . And lastly , the trapezoid , only two of whose sides are parallel . 18. A diagonal is a line which joins the ...
Page 33
... opposite one of them , to describe the triangle . 36. Let A and B be the given sides , and C the given angle which we will suppose is opposite the side B. Draw the indefinite line DF and make the angle FDH equal to the angle C : take DH ...
... opposite one of them , to describe the triangle . 36. Let A and B be the given sides , and C the given angle which we will suppose is opposite the side B. Draw the indefinite line DF and make the angle FDH equal to the angle C : take DH ...
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