Elements of Surveying with a Description of the Instruments and the Necessary Tables Including a Table of Natural Sines |
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Page 3
... given in plates 5 and 6 . Should these signs be generally adopted in the country , it would give entire uniformity to all maps and delineations of ground , and would establish a kind of language by which all the peculiarities of soil ...
... given in plates 5 and 6 . Should these signs be generally adopted in the country , it would give entire uniformity to all maps and delineations of ground , and would establish a kind of language by which all the peculiarities of soil ...
Page 9
... given number . Then , pass across the page , along a horizontal line , into the columns marked 0 , 1 , 2 , 3 , 4 , 5 , & c . , until you come to the column which is designated by the fourth figure of the given number : at this place ...
... given number . Then , pass across the page , along a horizontal line , into the columns marked 0 , 1 , 2 , 3 , 4 , 5 , & c . , until you come to the column which is designated by the fourth figure of the given number : at this place ...
Page 10
... given number . Take from the last column on the right of the page , marked D , the number on the same horizontal line with the logarithm , and multiply this number by the figures that have been considered as ciphers : then cut off from ...
... given number . Take from the last column on the right of the page , marked D , the number on the same horizontal line with the logarithm , and multiply this number by the figures that have been considered as ciphers : then cut off from ...
Page 11
... given number ; and the second term 65 is the difference of their logarithms , or tabular difference . The third term 87 is the difference between the given num- ber and the less number 672800 ; and hence the fourth term 56.55 is the ...
... given number ; and the second term 65 is the difference of their logarithms , or tabular difference . The third term 87 is the difference between the given num- ber and the less number 672800 ; and hence the fourth term 56.55 is the ...
Page 13
... given logarithm . 13. Search in the columns of logarithms for the decimal part of the given logarithm , and if it can be exactly found , set down the corresponding number . Then , if the character- istic of the given logarithm is ...
... given logarithm . 13. Search in the columns of logarithms for the decimal part of the given logarithm , and if it can be exactly found , set down the corresponding number . Then , if the character- istic of the given logarithm is ...
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